diff --git a/keyboards/crkbd/keymaps/like_jis/config.h b/keyboards/crkbd/keymaps/like_jis/config.h
index 0e2960a93..a061b4fb0 100644
--- a/keyboards/crkbd/keymaps/like_jis/config.h
+++ b/keyboards/crkbd/keymaps/like_jis/config.h
@@ -34,7 +34,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define PREVENT_STUCK_MODIFIERS
 #define TAPPING_FORCE_HOLD
-#define TAPPING_TERM 150
+#define TAPPING_TERM 250
 
 #undef RGBLED_NUM
 #define RGBLIGHT_ANIMATIONS
diff --git a/keyboards/crkbd/keymaps/like_jis/keymap.c b/keyboards/crkbd/keymaps/like_jis/keymap.c
index 42d36de44..b1b6c64b1 100644
--- a/keyboards/crkbd/keymaps/like_jis/keymap.c
+++ b/keyboards/crkbd/keymaps/like_jis/keymap.c
@@ -7,6 +7,7 @@
 #ifdef SSD1306OLED
   #include "ssd1306.h"
 #endif
+#include "oled_helper.h"
 
 extern keymap_config_t keymap_config;
 
@@ -21,27 +22,35 @@ extern uint8_t is_master;
 // 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.
-#define _QWERTY 0
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_number {
+  _BASE = 0,
+  _LOWER,
+  _RAISE,
+  _ADJUST,
+};
 
 enum custom_keycodes {
   LOWER = SAFE_RANGE,
   RAISE,
   ADJUST,
+  KANJI,
   RGBRST
 };
 
-#define KC______ KC_TRNS
-#define KC_XXXXX KC_NO
-#define KC_KANJI KC_GRV
+enum tapdances{
+  TD_CODO = 0,
+  // TD_MNUB,
+};
 
+// Layer Mode aliases
 #define KC_LOWER LOWER
 #define KC_RAISE RAISE
 
-#define KC_RST   RESET
+#define KC______ KC_TRNS
+#define KC_XXXXX KC_NO
+#define KC_KANJI KANJI
 
+#define KC_RST   RESET
 #define KC_LRST  RGBRST
 #define KC_LTOG  RGB_TOG
 #define KC_LHUI  RGB_HUI
@@ -51,31 +60,41 @@ enum custom_keycodes {
 #define KC_LVAI  RGB_VAI
 #define KC_LVAD  RGB_VAD
 #define KC_LMOD  RGB_MOD
-
 #define KC_KNRM  AG_NORM
 #define KC_KSWP  AG_SWAP
-#define KC_GUAP  LALT_T(KC_APP)
+
+#define KC_TBSF  LSFT_T(KC_TAB)
+// #define KC_SPSF  LSFT_T(KC_SPC)
+#define KC_ALAP  LALT_T(KC_APP)
+
+#define KC_CODO  TD(TD_CODO)
+// #define KC_MNUB  TD(TD_MNUB)
+
+qk_tap_dance_action_t tap_dance_actions[] = {
+  [TD_CODO] = ACTION_TAP_DANCE_DOUBLE(KC_COMM, KC_DOT),
+  // [TD_MNUB] = ACTION_TAP_DANCE_DOUBLE(KC_MINS, LSFT(KC_RO)),
+};
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-  [_QWERTY] = LAYOUT_kc( \
+  [_BASE] = LAYOUT_kc( \
   //,-----------------------------------------.                ,-----------------------------------------.
         ESC,     Q,     W,     E,     R,     T,                      Y,     U,     I,     O,     P,  MINS,\
   //|------+------+------+------+------+------|                |------+------+------+------+------+------|
-       LSFT,     A,     S,     D,     F,     G,                      H,     J,     K,     L,    UP,   ENT,\
+       TBSF,     A,     S,     D,     F,     G,                      H,     J,     K,     L,    UP,   ENT,\
   //|------+------+------+------+------+------|                |------+------+------+------+------+------|
-      LCTRL,     Z,     X,     C,     V,     B,                      N,     M,  COMM,  LEFT,  DOWN,  RGHT,\
+      LCTRL,     Z,     X,     C,     V,     B,                      N,     M,  CODO,  LEFT,  DOWN,  RGHT,\
   //|------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
-                                   LGUI, LOWER,  BSPC,      SPC, RAISE,  GUAP \
+                                   LGUI, LOWER,  BSPC,      SPC, RAISE,  ALAP \
                               //`--------------------'  `--------------------'
   ),
 
   [_LOWER] = LAYOUT_kc( \
   //,-----------------------------------------.                ,-----------------------------------------.
-        TAB,    F1,    F2,    F3,    F4,    F5,                  XXXXX,  MINS,   EQL,  JYEN,  LBRC,  RBRC,\
+      _____,    F1,    F2,    F3,    F4,    F5,                  XXXXX,  MINS,   EQL,  JYEN,  LBRC,  RBRC,\
   //|------+------+------+------+------+------|                |------+------+------+------+------+------|
       _____,    F6,    F7,    F8,    F9,   F10,                  XXXXX, XXXXX, XXXXX,  SCLN,  QUOT,  BSLS,\
   //|------+------+------+------+------+------|                |------+------+------+------+------+------|
-      _____,   F11,   F12, XXXXX, KANJI,   ENT,                  XXXXX, XXXXX,  COMM,   DOT,  SLSH,    RO,\
+      _____,   F11,   F12,   TAB, KANJI,   ENT,                  XXXXX, XXXXX,  COMM,   DOT,  SLSH,    RO,\
   //|------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
                                   _____, _____,   DEL,    _____, _____,   APP \
                               //`--------------------'  `--------------------'
@@ -83,11 +102,11 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
   [_RAISE] = LAYOUT_kc( \
   //,-----------------------------------------.                ,-----------------------------------------.
-      _____,     1,     2,     3,     4,     5,                      6,     7,     8,     9,     0, XXXXX,\
+      _____,     1,     2,     3,     4,     5,                      6,     7,     8,     9,     0,  PSLS,\
   //|------+------+------+------+------+------|                |------+------+------+------+------+------|
-      _____, XXXXX, XXXXX, XXXXX, XXXXX, XXXXX,                  XXXXX,     4,     5,     6,  QUOT, XXXXX,\
+      _____, XXXXX, XXXXX, XXXXX, XXXXX, XXXXX,                   QUOT,     4,     5,     6,  PPLS,  PAST,\
   //|------+------+------+------+------+------|                |------+------+------+------+------+------|
-      _____, XXXXX, XXXXX, XXXXX, XXXXX, XXXXX,                      0,     1,     2,     3,   DOT, XXXXX,\
+      _____, XXXXX, XXXXX, XXXXX, XXXXX, XXXXX,                      0,     1,     2,     3,   DOT,  PMNS,\
   //|------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
                                   _____, _____,  BSPC,    _____, _____,  LALT \
                               //`--------------------'  `--------------------'
@@ -95,152 +114,182 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
   [_ADJUST] = LAYOUT_kc( \
   //,-----------------------------------------.                ,-----------------------------------------.
-      _____,    RST,  LRST,  KNRM,  KSWP,XXXXX,                  XXXXX, XXXXX, XXXXX, XXXXX, XXXXX, XXXXX,\
+      _____,    RST,  LRST,  KNRM, KSWP, XXXXX,                  XXXXX, XXXXX, XXXXX, XXXXX, XXXXX, XXXXX,\
   //|------+-------+------+------+------+-----|                |------+------+------+------+------+------|
-      _____,   LTOG,  LHUI,  LSAI,  LVAI,XXXXX,                  XXXXX, XXXXX, XXXXX, XXXXX,  PGUP, XXXXX,\
+      _____,   LTOG,  LHUI,  LSAI, LVAI, XXXXX,                  XXXXX, XXXXX, XXXXX, XXXXX,  PGUP, XXXXX,\
   //|------+-------+------+------+------+-----|                |------+------+------+------+------+------|
-      _____,   LMOD,  LHUD,  LSAD,  LVAD,XXXXX,                  XXXXX, XXXXX, XXXXX,  HOME,  PGDN,   END,\
+      _____,   LMOD,  LHUD,  LSAD, LVAD, XXXXX,                  XXXXX, XXXXX, XXXXX,  HOME,  PGDN,   END,\
   //|------+------+------+------+------+------+------|  |------+------+------+------+------+------+------|
                                   _____, _____, XXXXX,    _____, _____, XXXXX \
                               //`--------------------'  `--------------------'
   )
 };
 
-int RGB_current_mode;
+#define L_BASE _BASE
+#define L_LOWER (1<<_LOWER)
+#define L_RAISE (1<<_RAISE)
+#define L_ADJUST (1<<_ADJUST)
+#define L_ADJUST_TRI (L_ADJUST|L_RAISE|L_LOWER)
 
-// Setting ADJUST layer RGB back to default
-static inline void update_tri_layer_RGB(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
-  if (IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2)) {
-    layer_on(layer3);
-  } else {
-    layer_off(layer3);
+#ifdef SSD1306OLED
+typedef struct {
+  uint8_t state;
+  char name[8];
+}LAYER_DISPLAY_NAME;
+
+#define LAYER_DISPLAY_MAX 5
+const LAYER_DISPLAY_NAME layer_display_name[LAYER_DISPLAY_MAX] = {
+  {L_BASE, "Base"},
+  {L_BASE + 1, "Base"},
+  {L_LOWER, "Lower"},
+  {L_RAISE, "Raise"},
+  {L_ADJUST_TRI, "Adjust"}
+};
+
+static inline const char* get_leyer_status(void) {
+
+  for (uint8_t i = 0; i < LAYER_DISPLAY_MAX; ++i) {
+    if (layer_state == 0 && layer_display_name[i].state == default_layer_state) {
+
+      return layer_display_name[i].name;
+    } else if (layer_state != 0 && layer_display_name[i].state == layer_state) {
+
+      return layer_display_name[i].name;
+    }
   }
+
+  return "?";
+}
+
+static char layer_status_buf[24] = "Layer state ready.\n";
+static inline void update_keymap_status(void) {
+
+  snprintf(layer_status_buf, sizeof(layer_status_buf) - 1, "OS:%s Layer:%s\n",
+    keymap_config.swap_lalt_lgui? "win" : "mac", get_leyer_status());
+}
+
+static inline void render_keymap_status(struct CharacterMatrix *matrix) {
+
+  matrix_write(matrix, layer_status_buf);
+}
+
+#define UPDATE_KEYMAP_STATUS() update_keymap_status()
+#define RENDER_KEYMAP_STATUS(a) render_keymap_status(a)
+
+#else
+
+#define UPDATE_KEYMAP_STATUS()
+#define RENDER_KEYMAP_STATUS(a)
+
+#endif
+
+static inline void update_change_layer(bool pressed, uint8_t layer1, uint8_t layer2, uint8_t layer3) {
+
+  pressed ? layer_on(layer1) : layer_off(layer1);
+  IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2) ? layer_on(layer3) : layer_off(layer3);
+}
+
+int RGB_current_mode;
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+
+  UPDATE_KEY_STATUS(keycode, record);
+
+  bool result = false;
+  switch (keycode) {
+    case LOWER:
+      update_change_layer(record->event.pressed, _LOWER, _RAISE, _ADJUST);
+      break;
+    case RAISE:
+      update_change_layer(record->event.pressed, _RAISE, _LOWER, _ADJUST);
+        break;
+    case KANJI:
+      if (record->event.pressed) {
+        if (keymap_config.swap_lalt_lgui == false) {
+          register_code(KC_LANG2);
+        } else {
+          SEND_STRING(SS_LALT("`"));
+        }
+      } else {
+        unregister_code(KC_LANG2);
+      }
+      break;
+    #ifdef RGBLIGHT_ENABLE
+      case RGB_MOD:
+          if (record->event.pressed) {
+            rgblight_mode(RGB_current_mode);
+            rgblight_step();
+            RGB_current_mode = rgblight_config.mode;
+          }
+        break;
+      case RGBRST:
+          if (record->event.pressed) {
+            eeconfig_update_rgblight_default();
+            rgblight_enable();
+            RGB_current_mode = rgblight_config.mode;
+          }
+        break;
+    #endif
+    default:
+      result = true;
+      break;
+  }
+
+  UPDATE_KEYMAP_STATUS();
+  return result;
 }
 
 void matrix_init_user(void) {
-    #ifdef RGBLIGHT_ENABLE
-      RGB_current_mode = rgblight_config.mode;
-    #endif
-    //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
-    #ifdef SSD1306OLED
-        iota_gfx_init(!has_usb());   // turns on the display
-    #endif
+  #ifdef RGBLIGHT_ENABLE
+    RGB_current_mode = rgblight_config.mode;
+  #endif
+  //SSD1306 OLED init, make sure to add #define SSD1306OLED in config.h
+  #ifdef SSD1306OLED
+    iota_gfx_init(!has_usb()); // turns on the display
+  #endif
 }
 
 //SSD1306 OLED update loop, make sure to add #define SSD1306OLED in config.h
 #ifdef SSD1306OLED
 
-
-// When add source files to SRC in rules.mk, you can use functions.
-const char *read_layer_state(void);
-const char *read_logo(void);
-void set_keylog(uint16_t keycode, keyrecord_t *record);
-const char *read_keylog(void);
-const char *read_keylogs(void);
-
-// const char *read_mode_icon(bool swap);
-// const char *read_host_led_state(void);
-// void set_timelog(void);
-// const char *read_timelog(void);
-
-#ifdef RGBLIGHT_ENABLE
-  const char *read_rgb_info(void);
-  #define RENDER_RGB_INFO(m) matrix_write_ln(m, (const char*)read_rgb_info())
-#else
-  #define RENDER_RGB_INFO(m)
-#endif
-
-
 void matrix_scan_user(void) {
-   iota_gfx_task();
+  iota_gfx_task();  // this is what updates the display continuously
 }
 
-static inline void matrix_render_user(struct CharacterMatrix *matrix) {
-  if (is_master) {
-    // If you want to change the display of OLED, you need to change here
-    matrix_write_ln(matrix, read_layer_state());
-    matrix_write_ln(matrix, read_keylog());
-    RENDER_RGB_INFO(matrix);
-    // matrix_write_ln(matrix, read_keylogs());
-    // matrix_write_ln(matrix, read_host_led_state());
-
-    // matrix_write_ln(matrix, read_mode_icon(keymap_config.swap_lalt_lgui));
-    // matrix_write_ln(matrix, read_timelog());
-  } else {
-    matrix_write(matrix, read_logo());
-  }
-}
-
-static inline void matrix_update(struct CharacterMatrix *dest, const struct CharacterMatrix *source) {
+static inline void matrix_update(struct CharacterMatrix *dest,
+                          const struct CharacterMatrix *source) {
   if (memcmp(dest->display, source->display, sizeof(dest->display))) {
     memcpy(dest->display, source->display, sizeof(dest->display));
     dest->dirty = true;
   }
 }
 
+static inline void render_status(struct CharacterMatrix *matrix) {
+
+  UPDATE_LED_STATUS();
+  RENDER_LED_STATUS(matrix);
+  RENDER_KEYMAP_STATUS(matrix);
+  UPDATE_LOCK_STATUS();
+  RENDER_LOCK_STATUS(matrix);
+  RENDER_KEY_STATUS(matrix);
+}
+
 void iota_gfx_task_user(void) {
   struct CharacterMatrix matrix;
+
+  #if DEBUG_TO_SCREEN
+    if (debug_enable) {
+      return;
+    }
+  #endif
+
   matrix_clear(&matrix);
-  matrix_render_user(&matrix);
+  if (is_master) {
+    render_status(&matrix);
+  } else {
+    RENDER_LOGO(&matrix);
+  }
+
   matrix_update(&display, &matrix);
 }
 
 #endif
-
-bool process_record_user(uint16_t keycode, keyrecord_t *record) {
-  #ifdef SSD1306OLED
-    if (record->event.pressed) {
-      set_keylog(keycode, record);
-      // set_timelog();
-    }
-  #endif
-
-  switch (keycode) {
-    case LOWER:
-      if (record->event.pressed) {
-        layer_on(_LOWER);
-        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
-      } else {
-        layer_off(_LOWER);
-        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
-      }
-      break;
-    case RAISE:
-      if (record->event.pressed) {
-        layer_on(_RAISE);
-        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
-      } else {
-        layer_off(_RAISE);
-        update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
-      }
-      break;
-    case ADJUST:
-        if (record->event.pressed) {
-          layer_on(_ADJUST);
-        } else {
-          layer_off(_ADJUST);
-        }
-        break;
-
-    #ifdef RGBLIGHT_ENABLE
-    case RGB_MOD:
-        if (record->event.pressed) {
-          rgblight_mode(RGB_current_mode);
-          rgblight_step();
-          RGB_current_mode = rgblight_config.mode;
-        }
-      break;
-    case RGBRST:
-        if (record->event.pressed) {
-          eeconfig_update_rgblight_default();
-          rgblight_enable();
-          RGB_current_mode = rgblight_config.mode;
-        }
-      break;
-    #endif
-    default:
-      return true;
-  }
-
-  return false;
-}
diff --git a/keyboards/crkbd/keymaps/like_jis/oled_helper.c b/keyboards/crkbd/keymaps/like_jis/oled_helper.c
new file mode 100644
index 000000000..500d3c0dc
--- /dev/null
+++ b/keyboards/crkbd/keymaps/like_jis/oled_helper.c
@@ -0,0 +1,83 @@
+#ifdef SSD1306OLED
+#include QMK_KEYBOARD_H
+#include "ssd1306.h"
+
+void render_logo(struct CharacterMatrix *matrix) {
+
+  const char logo_buf[]={
+    0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,0x90,0x91,0x92,0x93,0x94,
+    0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,0xb0,0xb1,0xb2,0xb3,0xb4,
+    0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
+    0};
+
+  matrix_write(matrix, logo_buf);
+}
+
+static char keylog_buf[24] = "Key state ready.";
+const char code_to_name[60] = {
+    ' ', ' ', ' ', ' ', 'a', 'b', 'c', 'd', 'e', 'f',
+    'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p',
+    'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+    '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
+    'R', 'E', 'B', 'T', ' ', '-', ' ', '@', ' ', ' ',
+    ' ', ';', ':', ' ', ',', '.', '/', ' ', ' ', ' '};
+
+void update_key_status(uint16_t keycode, keyrecord_t *record) {
+
+  if (!record->event.pressed) return;
+
+  char name = (keycode < 60) ? code_to_name[keycode] : ' ';
+  snprintf(keylog_buf, sizeof(keylog_buf) - 1, "Key:%dx%d %2x %c",
+          record->event.key.row, record->event.key.col,
+          (uint16_t)keycode, name);
+}
+
+void render_key_status(struct CharacterMatrix *matrix) {
+
+  matrix_write(matrix, keylog_buf);
+}
+
+static char lock_buf[24] = "Lock state ready.\n";
+void update_lock_status(void) {
+
+  uint8_t leds = host_keyboard_leds();
+  char *num_lock = (leds & (1<<USB_LED_NUM_LOCK)) ? "Num" : "";
+  char *caps_lock = (leds & (1<<USB_LED_CAPS_LOCK)) ? "Caps" : "";
+  char *scrl_lock = (leds & (1<<USB_LED_SCROLL_LOCK)) ? "Scrn" : "";
+  snprintf(lock_buf, sizeof(lock_buf) - 1, "Lock:%s %s %s\n",
+          num_lock, caps_lock, scrl_lock);
+}
+
+void render_lock_status(struct CharacterMatrix *matrix) {
+
+  matrix_write(matrix, lock_buf);
+}
+
+#ifdef RGBLIGHT_ENABLE
+extern rgblight_config_t rgblight_config;
+
+static char led_buf[24] = "LED state ready.\n";
+rgblight_config_t rgblight_config_bak;
+void update_led_status(void) {
+
+  if (rgblight_config_bak.enable != rgblight_config.enable ||
+      rgblight_config_bak.mode != rgblight_config.mode ||
+      rgblight_config_bak.hue != rgblight_config.hue ||
+      rgblight_config_bak.sat != rgblight_config.sat ||
+      rgblight_config_bak.val != rgblight_config.val
+  ) {
+    snprintf(led_buf, sizeof(led_buf) - 1, "LED%c:%2d hsv:%2d %2d %2d\n",
+      rgblight_config.enable ? '*' : '.', (uint8_t)rgblight_config.mode,
+      (uint8_t)(rgblight_config.hue / RGBLIGHT_HUE_STEP),
+      (uint8_t)(rgblight_config.sat / RGBLIGHT_SAT_STEP),
+      (uint8_t)(rgblight_config.val / RGBLIGHT_VAL_STEP));
+      rgblight_config_bak = rgblight_config;
+  }
+}
+
+void render_led_status(struct CharacterMatrix *matrix) {
+
+  matrix_write(matrix, led_buf);
+}
+#endif
+#endif
diff --git a/keyboards/crkbd/keymaps/like_jis/oled_helper.h b/keyboards/crkbd/keymaps/like_jis/oled_helper.h
new file mode 100644
index 000000000..44628a526
--- /dev/null
+++ b/keyboards/crkbd/keymaps/like_jis/oled_helper.h
@@ -0,0 +1,35 @@
+#ifdef SSD1306OLED
+
+void render_logo(struct CharacterMatrix *matrix);
+void update_key_status(uint16_t keycode, keyrecord_t *record);
+void render_key_status(struct CharacterMatrix *matrix);
+void update_lock_status(void);
+void render_lock_status(struct CharacterMatrix *matrix);
+
+#define RENDER_LOGO(a) render_logo(a)
+#define UPDATE_KEY_STATUS(a, b) update_key_status(a, b)
+#define RENDER_KEY_STATUS(a) render_key_status(a)
+#define UPDATE_LOCK_STATUS() update_lock_status()
+#define RENDER_LOCK_STATUS(a) render_lock_status(a)
+
+#ifdef RGBLIGHT_ENABLE
+  void update_led_status(void);
+  void render_led_status(struct CharacterMatrix *matrix);
+  #define UPDATE_LED_STATUS() update_led_status()
+  #define RENDER_LED_STATUS(a) render_led_status(a)
+#else
+  #define UPDATE_LED_STATUS()
+  #define RENDER_LED_STATUS(a)
+#endif
+
+#else
+
+#define RENDER_LOGO(a)
+#define UPDATE_KEY_STATUS(a, b)
+#define RENDER_KEY_STATUS(a)
+#define UPDATE_LOCK_STATUS()
+#define RENDER_LOCK_STATUS(a)
+#define UPDATE_LED_STATUS()
+#define RENDER_LED_STATUS(a)
+
+#endif
diff --git a/keyboards/crkbd/keymaps/like_jis/rules.mk b/keyboards/crkbd/keymaps/like_jis/rules.mk
index 16deaf45d..92f4693aa 100644
--- a/keyboards/crkbd/keymaps/like_jis/rules.mk
+++ b/keyboards/crkbd/keymaps/like_jis/rules.mk
@@ -14,18 +14,19 @@ MIDI_ENABLE = no            # MIDI controls
 AUDIO_ENABLE = no           # Audio output on port C6
 UNICODE_ENABLE = no         # Unicode
 BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-RGBLIGHT_ENABLE = yes       # Enable WS2812 RGB underlight. 
+RGBLIGHT_ENABLE = yes       # Enable WS2812 RGB underlight.
 SWAP_HANDS_ENABLE = no      # Enable one-hand typing
+TAP_DANCE_ENABLE = yes
 
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
 SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
+Link_Time_Optimization = yes # if firmware size over limit, try this option
+
+ifeq ($(strip $(Link_Time_Optimization)),yes)
+    EXTRAFLAGS += -flto -DUSE_Link_Time_Optimization
+endif
+
 # If you want to change the display of OLED, you need to change here
 SRC +=  ./lib/glcdfont.c \
-        ./lib/rgb_state_reader.c \
-        ./lib/layer_state_reader.c \
-        ./lib/logo_reader.c \
-        ./lib/keylogger.c \
-        # ./lib/mode_icon_reader.c \
-        # ./lib/host_led_state_reader.c \
-        # ./lib/timelogger.c \
+        oled_helper.c \