diff --git a/keyboards/ajisai74/ajisai74.c b/keyboards/ajisai74/ajisai74.c
new file mode 100644
index 000000000..3c9342e6f
--- /dev/null
+++ b/keyboards/ajisai74/ajisai74.c
@@ -0,0 +1,18 @@
+/*
+Copyright 2020 Salicylic_Acid
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "ajisai74.h"
diff --git a/keyboards/ajisai74/ajisai74.h b/keyboards/ajisai74/ajisai74.h
new file mode 100644
index 000000000..40c7d8b31
--- /dev/null
+++ b/keyboards/ajisai74/ajisai74.h
@@ -0,0 +1,54 @@
+/*
+Copyright 2020 Salicylic_Acid
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "quantum.h"
+
+/*
+ * ,------------------------------------   ------------------------------------------------------------.
+ * | L00 | L01 | L02 | L03 | L04 | L05 |   | R00 | R01 | R02 | R03 | R04 | R05 | R06 | R07 | R08 | R18 |
+ * |---------------------------------------------------------------------------------------------------+
+ * |   L10  | L11 | L12 | L13 | L14 | L15 |   | R10 | R11 | R12 | R13 | R14 | R15 | R16 |   R17  | R28 |
+ * |----------------------------------------  ---------------------------------------------------------+
+ * |   L20   | L21 | L22 | L23 | L24 | L25 |   | R20 | R21 | R22 | R23 | R24 | R25 |  R26 |  R27 | R38 |
+ * |---------------------------------------------------------------------------------------------------+
+ * |  L30 | L45 | L31 | L32 | L33 | L34 | L35 |   | R30 | R31 | R32 | R33 | R34 |   R35    | R36 | R37 |
+ * |-------------------------------------------   -----------------------------------------------------+
+ * |  L40  |  L41  |  L42  |  L43  |  L44  |   |  R40 | R41 |  R42 | R43 | R44 |     | R46 | R47 | R48 |
+ * |----------------------------------------   --------------------------------------------------------'
+ */
+
+#define LAYOUT( \
+    L00, L01, L02, L03, L04, L05,      R00, R01, R02, R03, R04, R05, R06, R07, R08, R18, \
+    L10, L11, L12, L13, L14, L15,      R10, R11, R12, R13, R14, R15, R16, R17, R28, \
+    L20, L21, L22, L23, L24, L25,      R20, R21, R22, R23, R24, R25, R26, R27, R38, \
+    L30, L45, L31, L32, L33, L34, L35, R30, R31, R32, R33, R34, R35, R36, R37, \
+    L40, L41, L42, L43, L44,           R40, R41, R42, R43, R44,      R46, R47, R48 \
+  ) \
+  { \
+    { L00,   L01,   L02,   L03,   L04,   L05, KC_NO, KC_NO, KC_NO }, \
+    { L10,   L11,   L12,   L13,   L14,   L15, KC_NO, KC_NO, KC_NO }, \
+    { L20,   L21,   L22,   L23,   L24,   L25, KC_NO, KC_NO, KC_NO }, \
+    { L30,   L31,   L32,   L33,   L34,   L35, KC_NO, KC_NO, KC_NO }, \
+    { L40,   L41,   L42,   L43,   L44,   L45, KC_NO, KC_NO, KC_NO }, \
+    { R00,   R01,   R02,   R03,   R04,   R05,   R06,   R07,   R08 }, \
+    { R10,   R11,   R12,   R13,   R14,   R15,   R16,   R17,   R18 }, \
+    { R20,   R21,   R22,   R23,   R24,   R25,   R26,   R27,   R28 }, \
+    { R30,   R31,   R32,   R33,   R34,   R35,   R36,   R37,   R38 }, \
+    { R40,   R41,   R42,   R43,   R44, KC_NO,   R46,   R47,   R48 }  \
+  }
diff --git a/keyboards/ajisai74/config.h b/keyboards/ajisai74/config.h
new file mode 100644
index 000000000..e7a1555ae
--- /dev/null
+++ b/keyboards/ajisai74/config.h
@@ -0,0 +1,49 @@
+/*
+Copyright 2020 Salicylic_Acid
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0x04D8
+#define PRODUCT_ID      0xEB54
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    Salicylic_Acid
+#define PRODUCT         ajisai74
+
+/* key matrix size */
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 9
+
+// wiring of each half
+#define MATRIX_ROW_PINS { D4, C6, D7, E6, B4 }
+#define MATRIX_COL_PINS { F4, F5, F6, F7, B1, B3, B2, B5, D3 }
+
+#define DIODE_DIRECTION COL2ROW
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE 5
+
+/* serial.c configuration for split keyboard */
+#define SOFT_SERIAL_PIN D2
+#define SPLIT_HAND_PIN B6
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
diff --git a/keyboards/ajisai74/info.json b/keyboards/ajisai74/info.json
new file mode 100644
index 000000000..b8ab1f109
--- /dev/null
+++ b/keyboards/ajisai74/info.json
@@ -0,0 +1,86 @@
+{
+    "keyboard_name": "ajisai74", 
+    "url": "https://salicylic-acid3.hatenablog.com/", 
+    "maintainer": "Salicylic_acid3", 
+    "width": 16.75, 
+    "height": 5, 
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                {"label":"ESC", "x":0, "y":0},
+                {"label":"1", "x":1, "y":0}, 
+                {"label":"2", "x":2, "y":0}, 
+                {"label":"3", "x":3, "y":0}, 
+                {"label":"4", "x":4, "y":0}, 
+                {"label":"5", "x":5, "y":0}, 
+                {"label":"6", "x":6.75, "y":0}, 
+                {"label":"7", "x":7.75, "y":0}, 
+                {"label":"8", "x":8.75, "y":0},
+                {"label":"9", "x":9.75, "y":0},
+                {"label":"0", "x":10.75, "y":0},
+                {"label":"-", "x":11.75, "y":0},
+                {"label":"=", "x":12.75, "y":0},
+                {"label":"Back", "x":13.75, "y":0},
+                {"label":"Back", "x":14.75, "y":0}, 
+                {"label":"Insert", "x":15.75, "y":0}, 
+                {"label":"Tab", "x":0, "y":1, "w":1.5}, 
+                {"label":"Q", "x":1.5, "y":1}, 
+                {"label":"W", "x":2.5, "y":1}, 
+                {"label":"E", "x":3.5, "y":1}, 
+                {"label":"R", "x":4.5, "y":1}, 
+                {"label":"T", "x":5.5, "y":1}, 
+                {"label":"Y", "x":7.25, "y":1},
+                {"label":"U", "x":8.25, "y":1}, 
+                {"label":"I", "x":9.25, "y":1}, 
+                {"label":"O", "x":10.25, "y":1}, 
+                {"label":"P", "x":11.25, "y":1}, 
+                {"label":"[", "x":12.25, "y":1}, 
+                {"label":"]", "x":13.25, "y":1}, 
+                {"label":"\"", "x":14.25, "y":1, "w":1.5}, 
+                {"label":"Del", "x":15.75, "y":1}, 
+                {"label":"CapsLock", "x":0, "y":2, "w":1.75}, 
+                {"label":"A", "x":1.75, "y":2}, 
+                {"label":"S", "x":2.75, "y":2}, 
+                {"label":"D", "x":3.75, "y":2}, 
+                {"label":"F", "x":4.75, "y":2}, 
+                {"label":"G", "x":5.75, "y":2}, 
+                {"label":"H", "x":7.5, "y":2}, 
+                {"label":"J", "x":8.5, "y":2}, 
+                {"label":"K", "x":9.5, "y":2}, 
+                {"label":"L", "x":10.5, "y":2}, 
+                {"label":":", "x":11.5, "y":2}, 
+                {"label":"'", "x":12.5, "y":2}, 
+                {"label":"Return", "x":13.5, "y":2}, 
+                {"label":"Return", "x":14.5, "y":2, "w":1.25}, 
+                {"label":"PgUp", "x":15.75, "y":2}, 
+                {"label":"Shift", "x":0, "y":3, "w":1.25}, 
+                {"label":"Shift", "x":1.25, "y":3}, 
+                {"label":"Z", "x":2.25, "y":3}, 
+                {"label":"X", "x":3.25, "y":3}, 
+                {"label":"C", "x":4.25, "y":3}, 
+                {"label":"V", "x":5.25, "y":3}, 
+                {"label":"B", "x":6.25, "y":3}, 
+                {"label":"N", "x":8, "y":3}, 
+                {"label":"M", "x":9, "y":3}, 
+                {"label":"<", "x":10, "y":3}, 
+                {"label":">", "x":11, "y":3}, 
+                {"label":"?", "x":12, "y":3}, 
+                {"label":"Shift", "x":13, "y":3, "w":1.75}, 
+                {"label":"Up", "x":14.75, "y":3}, 
+                {"label":"PgDwn", "x":15.75, "y":3}, 
+                {"label":"Ctrl", "x":0, "y":4, "w":1.5}, 
+                {"label":"Win", "x":1.5, "y":4}, 
+                {"label":"Alt", "x":2.5, "y":4, "w":1.5}, 
+                {"x":4, "y":4, "w":1.5}, 
+                {"x":5.5, "y":4, "w":1.25}, 
+                {"x":7.5, "y":4, "w":1.25}, 
+                {"x":8.75, "y":4, "w":1.25}, 
+                {"label":"Alt", "x":10, "y":4, "w":1.25}, 
+                {"label":"Win", "x":11.25, "y":4}, 
+                {"label":"Fn", "x":12.25, "y":4}, 
+                {"label":"Left", "x":13.75, "y":4}, 
+                {"label":"Down", "x":14.75, "y":4}, 
+                {"label":"Right", "x":15.75, "y":4}]
+        }
+    }
+}
\ No newline at end of file
diff --git a/keyboards/ajisai74/keymaps/default/config.h b/keyboards/ajisai74/keymaps/default/config.h
new file mode 100644
index 000000000..81ee8ef78
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/default/config.h
@@ -0,0 +1,22 @@
+/* Copyright 2020 Salicylic_acid3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+/* Select hand configuration */
+
+#define TAPPING_FORCE_HOLD
+#define TAPPING_TERM 180
diff --git a/keyboards/ajisai74/keymaps/default/keymap.c b/keyboards/ajisai74/keymaps/default/keymap.c
new file mode 100644
index 000000000..4bd68878a
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/default/keymap.c
@@ -0,0 +1,58 @@
+/*
+Copyright 2020 Salicylic_Acid
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+enum layer_number {
+  _QWERTY = 0,
+  _FN,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [_QWERTY] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+       KC_ESC,    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,        KC_6,    KC_7,    KC_8,    KC_9,    KC_0, KC_MINS,  KC_EQL, KC_BSPC, KC_BSPC,  KC_INS,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+       KC_TAB,    KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,        KC_Y,    KC_U,    KC_I,    KC_O,    KC_P, KC_LBRC, KC_RBRC, KC_BSLS,  KC_DEL,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      KC_CAPS,    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,        KC_H,    KC_J,    KC_K,    KC_L, KC_SCLN, KC_QUOT,  KC_ENT,  KC_ENT, KC_PGUP,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  KC_LSFT,KC_LSFT,KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,        KC_N,    KC_M, KC_COMM,  KC_DOT, KC_SLSH, KC_RSFT,            KC_UP, KC_PGDN,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+     KC_LCTRL, KC_LGUI, KC_LALT,  KC_SPC,  KC_SPC,               KC_SPC,  KC_SPC, KC_RALT, KC_RGUI, MO(_FN),           KC_LEFT, KC_DOWN,KC_RIGHT
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  ),
+
+  [_FN] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+      _______,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,       KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,  KC_F12, KC_STOP, KC_SLCK,KC_PAUSE,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_PSCR,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_HOME,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  _______,_______,_______,_______,_______,_______, _______,     _______, _______, _______, _______, _______, _______,          _______,  KC_END,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______,              _______, _______, _______, _______, _______,          _______, _______, _______ 
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  )
+};
+
diff --git a/keyboards/ajisai74/keymaps/jis/config.h b/keyboards/ajisai74/keymaps/jis/config.h
new file mode 100644
index 000000000..81ee8ef78
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/jis/config.h
@@ -0,0 +1,22 @@
+/* Copyright 2020 Salicylic_acid3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+/* Select hand configuration */
+
+#define TAPPING_FORCE_HOLD
+#define TAPPING_TERM 180
diff --git a/keyboards/ajisai74/keymaps/jis/keymap.c b/keyboards/ajisai74/keymaps/jis/keymap.c
new file mode 100644
index 000000000..b0d31b03b
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/jis/keymap.c
@@ -0,0 +1,65 @@
+/*
+Copyright 2020 Salicylic_Acid
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+#include "keymap_jp.h"
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+enum layer_number {
+  _QWERTY = 0,
+  _FN,
+};
+
+enum tapdances{
+  TD_ENT = 0,
+};
+
+qk_tap_dance_action_t tap_dance_actions[] = {
+  [TD_ENT] = ACTION_TAP_DANCE_DOUBLE(KC_ENT, KC_ENT),
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [_QWERTY] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+       KC_ESC,    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,        KC_6,    KC_7,    KC_8,    KC_9,    KC_0, JP_MINS,  JP_EQL,  JP_YEN, KC_BSPC, KC_DEL,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+       KC_TAB,    KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,        KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,   JP_AT, JP_LBRC,TD(TD_ENT),KC_PSCR,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      KC_CAPS,    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,        KC_H,    KC_J,    KC_K,    KC_L, JP_SCLN, JP_QUOT, JP_RBRC,TD(TD_ENT),KC_PGUP,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  KC_LSFT,JP_BSLS,KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,        KC_N,    KC_M, KC_COMM,  KC_DOT, JP_SLSH, KC_RSFT,            KC_UP, KC_PGDN,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+     KC_LCTRL, KC_LGUI, KC_LALT, KC_MHEN,  KC_SPC,               KC_SPC, KC_HENK, KC_KANA,  KC_APP, MO(_FN),          KC_LEFT, KC_DOWN,KC_RIGHT
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  ),
+
+  [_FN] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+      _______,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,       KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,  KC_F12, KC_STOP, KC_SLCK,KC_PAUSE,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_PSCR,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_HOME,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  _______,_______,_______,_______,_______,_______, _______,     _______, _______, _______, _______, _______, _______,          _______,  KC_END,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______,              _______, _______, _______, _______, _______,          _______, _______, _______ 
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  )
+};
diff --git a/keyboards/ajisai74/keymaps/jis/rules.mk b/keyboards/ajisai74/keymaps/jis/rules.mk
new file mode 100644
index 000000000..e5ddcae8d
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/jis/rules.mk
@@ -0,0 +1 @@
+TAP_DANCE_ENABLE = yes
diff --git a/keyboards/ajisai74/keymaps/salicylic/config.h b/keyboards/ajisai74/keymaps/salicylic/config.h
new file mode 100644
index 000000000..81ee8ef78
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/salicylic/config.h
@@ -0,0 +1,22 @@
+/* Copyright 2020 Salicylic_acid3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+/* Select hand configuration */
+
+#define TAPPING_FORCE_HOLD
+#define TAPPING_TERM 180
diff --git a/keyboards/ajisai74/keymaps/salicylic/keymap.c b/keyboards/ajisai74/keymaps/salicylic/keymap.c
new file mode 100644
index 000000000..03cecb7a0
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/salicylic/keymap.c
@@ -0,0 +1,80 @@
+/*
+Copyright 2020 Salicylic_Acid
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+#include "keymap_jp.h"
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+enum layer_number {
+  _QWERTY = 0,
+  _LOWER,
+  _RAISE,
+};
+
+enum tapdances{
+  TD_ENT = 0,
+};
+
+qk_tap_dance_action_t tap_dance_actions[] = {
+  [TD_ENT] = ACTION_TAP_DANCE_DOUBLE(KC_ENT, KC_ENT),
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [_QWERTY] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+       KC_ESC,    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,        KC_6,    KC_7,    KC_8,    KC_9,    KC_0, JP_MINS,  JP_EQL,  KC_END, KC_HOME, KC_PSCR,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+       KC_TAB,    KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,        KC_Y,    KC_U,    KC_I,    KC_O,    KC_P, JP_LBRC, JP_RBRC, KC_BSPC,  KC_DEL,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+     KC_LCTRL,    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,        KC_H,    KC_J,    KC_K,    KC_L, JP_MINS, JP_BSLS,TD(TD_ENT),TD(TD_ENT),KC_PGUP,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  KC_LSFT,KC_LSFT,KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,        KC_N,    KC_M, KC_COMM,  KC_DOT, JP_SLSH, KC_RSFT,            KC_UP, KC_PGDN,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      KC_ZKHK, KC_LGUI, KC_MHEN,LT(_LOWER,KC_ENT), KC_BSPC, KC_DEL,LT(_RAISE,KC_SPC),KC_HENK,KC_LALT,KC_APP,           KC_LEFT, KC_DOWN,KC_RIGHT
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  ),
+
+  [_LOWER] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+      _______,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,       KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,  KC_F12, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      JP_DQUO, JP_EXLM, JP_QUES, JP_LBRC, JP_RBRC, JP_TILD,       KC_P6,   KC_P7,   KC_P8,   KC_P9, JP_ASTR, JP_SLSH, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      JP_QUOT, JP_HASH,  JP_DQT, JP_LPRN, JP_RPRN,   JP_AT,     XXXXXXX,   KC_P4,   KC_P5,   KC_P6, JP_MINS,  JP_EQL, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+ _______,JP_CIRC,JP_PERC,JP_AMPR,JP_SCLN, JP_COLN, JP_PIPE,       KC_P0,   KC_P1,   KC_P2,   KC_P3, JP_PLUS, _______,          _______, _______,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______,MO(_LOWER), _______,          _______,MO(_RAISE),  JP_DOT, _______, _______,          _______, _______, _______ 
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  ),
+
+  [_RAISE] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+      _______,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,       KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,  KC_F12, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+       KC_TAB,    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,     XXXXXXX, XXXXXXX,   KC_UP, XXXXXXX, XXXXXXX, XXXXXXX, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+LCTL_T(KC_F11),XXXXXXX,   KC_F2,   KC_F3,   KC_F4,   KC_F5,     XXXXXXX, KC_LEFT, KC_DOWN,KC_RIGHT, XXXXXXX, XXXXXXX, _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+_______,SFT_T(KC_F12),KC_F6,KC_F7, KC_F8,   KC_F9,  KC_F10,     XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,          _______, _______, _______,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______,              _______, _______, _______, _______, _______,          _______, _______, _______ 
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  ),
+};
diff --git a/keyboards/ajisai74/keymaps/salicylic/rules.mk b/keyboards/ajisai74/keymaps/salicylic/rules.mk
new file mode 100644
index 000000000..e5ddcae8d
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/salicylic/rules.mk
@@ -0,0 +1 @@
+TAP_DANCE_ENABLE = yes
diff --git a/keyboards/ajisai74/keymaps/via/config.h b/keyboards/ajisai74/keymaps/via/config.h
new file mode 100644
index 000000000..81ee8ef78
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/via/config.h
@@ -0,0 +1,22 @@
+/* Copyright 2020 Salicylic_acid3
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+/* Select hand configuration */
+
+#define TAPPING_FORCE_HOLD
+#define TAPPING_TERM 180
diff --git a/keyboards/ajisai74/keymaps/via/keymap.c b/keyboards/ajisai74/keymaps/via/keymap.c
new file mode 100644
index 000000000..79bd7541c
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/via/keymap.c
@@ -0,0 +1,86 @@
+/*
+Copyright 2020 Salicylic_Acid
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include QMK_KEYBOARD_H
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+enum layer_number {
+  _BASE = 0,
+  _L1,
+  _L2,
+  _L3,
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [_BASE] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+       KC_ESC,    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,        KC_6,    KC_7,    KC_8,    KC_9,    KC_0, KC_MINS,  KC_EQL, KC_BSPC, KC_BSPC,  KC_INS,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+       KC_TAB,    KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,        KC_Y,    KC_U,    KC_I,    KC_O,    KC_P, KC_LBRC, KC_RBRC, KC_BSLS,  KC_DEL,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      KC_CAPS,    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,        KC_H,    KC_J,    KC_K,    KC_L, KC_SCLN, KC_QUOT,  KC_ENT,  KC_ENT, KC_PGUP,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  KC_LSFT,KC_LSFT,KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,        KC_N,    KC_M, KC_COMM,  KC_DOT, KC_SLSH, KC_RSFT,            KC_UP, KC_PGDN,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+     KC_LCTRL, KC_LGUI, KC_LALT,  KC_SPC,  KC_SPC,               KC_SPC,  KC_SPC, KC_RALT, KC_RGUI, MO(_L1),           KC_LEFT, KC_DOWN,KC_RIGHT
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  ),
+
+  [_L1] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+      _______,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,       KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,  KC_F12, KC_STOP, KC_SLCK,KC_PAUSE,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_PSCR,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_HOME,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  _______,_______,_______,_______,_______,_______, _______,     _______, _______, _______, _______, _______, _______,          _______,  KC_END,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______,              _______, _______, _______, _______, _______,          _______, _______, _______ 
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  ),
+
+  [_L2] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+      _______,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,       KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,  KC_F12, KC_STOP, KC_SLCK,KC_PAUSE,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_PSCR,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_HOME,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  _______,_______,_______,_______,_______,_______, _______,     _______, _______, _______, _______, _______, _______,          _______,  KC_END,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______,              _______, _______, _______, _______, _______,          _______, _______, _______ 
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  ),
+
+  [_L3] = LAYOUT(
+  //,-----------------------------------------------------|   |-----------------------------------------------------------------------------------------.
+      _______,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,       KC_F6,   KC_F7,   KC_F8,   KC_F9,  KC_F10,  KC_F11,  KC_F12, KC_STOP, KC_SLCK,KC_PAUSE,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_PSCR,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______, _______,     _______, _______, _______, _______, _______, _______, _______, _______, KC_HOME,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+  _______,_______,_______,_______,_______,_______, _______,     _______, _______, _______, _______, _______, _______,          _______,  KC_END,
+  //|--------+--------+--------+--------+--------+--------|   |--------+--------+--------+--------+--------+--------+--------+--------+--------|
+      _______, _______, _______, _______, _______,              _______, _______, _______, _______, _______,          _______, _______, _______ 
+  //|-----------------------------------------------------|   |--------------------------------------------------------------------------------'
+  )
+};
diff --git a/keyboards/ajisai74/keymaps/via/rules.mk b/keyboards/ajisai74/keymaps/via/rules.mk
new file mode 100644
index 000000000..036bd6d1c
--- /dev/null
+++ b/keyboards/ajisai74/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/ajisai74/readme.md b/keyboards/ajisai74/readme.md
new file mode 100644
index 000000000..af66ce0fc
--- /dev/null
+++ b/keyboards/ajisai74/readme.md
@@ -0,0 +1,17 @@
+# AJisai74
+
+![ajisai74](https://cdn-ak.f.st-hatena.com/images/fotolife/S/Salicylic_acid3/20200812/20200812214740.png)
+
+This is 74 keys Custom keyboard.
+
+* Keyboard Maintainer: [Salicylic_acid3](https://github.com/Salicylic-acid3)
+* Hardware Supported: AJisai74 PCB, Pro Micro
+* Hardware Availability: [PCB & Case Data](https://github.com/Salicylic-acid3/PCB_Data), [Booth Shop](https://salicylic-acid3.booth.pm/items/2291877)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make ajisai74:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+[Build guide](https://salicylic-acid3.hatenablog.com/entry/ajisai74-build-guide)
diff --git a/keyboards/ajisai74/rules.mk b/keyboards/ajisai74/rules.mk
new file mode 100644
index 000000000..9b916f556
--- /dev/null
+++ b/keyboards/ajisai74/rules.mk
@@ -0,0 +1,24 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = no            # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output
+
+SPLIT_KEYBOARD = yes