diff --git a/home/linux/gui/base/fcitx5/README.md b/home/linux/gui/base/fcitx5/README.md
new file mode 100644
index 00000000..0652e7ab
--- /dev/null
+++ b/home/linux/gui/base/fcitx5/README.md
@@ -0,0 +1,8 @@
+# fcitx5 - IME
+
+## Available Configurations
+
+- `profile` → Symlink will be created at: `~/.config/fcitx5/profile`
+- `config1.db` (Mozc config) → Symlink will be created at: `~/.config/mozc/config1.db`
+  - Main changes from the defaults: use half-width for all alphabets, numbers, and punctuation.
+  - https://github.com/google/mozc/blob/2.30.5544.102/docs/configurations.md
diff --git a/home/linux/gui/base/fcitx5/default.nix b/home/linux/gui/base/fcitx5/default.nix
index e7407c52..6b6cc028 100644
--- a/home/linux/gui/base/fcitx5/default.nix
+++ b/home/linux/gui/base/fcitx5/default.nix
@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ config, pkgs, ... }:
 {
   xdg.configFile = {
     "fcitx5/profile" = {
@@ -7,6 +7,8 @@
       # so we need to force replace it in every rebuild to avoid file conflict.
       force = true;
     };
+    "mozc/config1.db".source =
+      config.lib.file.mkOutOfStoreSymlink "${config.home.homeDirectory}/nix-config/home/linux/gui/base/fcitx5/mozc-config1.db";
   };
 
   i18n.inputMethod = {
@@ -22,7 +24,9 @@
       # fcitx5-chinese-addons # we use rime instead
 
       # Japanese
-      fcitx5-mozc-ut
+      # ctrl-i / F7 - convert to takakana
+      # ctrl-u / F6 - convert to hiragana
+      fcitx5-mozc-ut # Moze with UT dictionary
     ];
   };
 }
diff --git a/home/linux/gui/base/fcitx5/mozc-config1.db b/home/linux/gui/base/fcitx5/mozc-config1.db
new file mode 100644
index 00000000..91823eac
Binary files /dev/null and b/home/linux/gui/base/fcitx5/mozc-config1.db differ
diff --git a/hosts/idols-ai/preservation.nix b/hosts/idols-ai/preservation.nix
index 568e7b34..17ff3e0d 100644
--- a/hosts/idols-ai/preservation.nix
+++ b/hosts/idols-ai/preservation.nix
@@ -143,6 +143,7 @@ in
 
         # google ai editor (antigravity)
         ".config/Antigravity"
+        ".antigravity"
 
         # ai agents
         ".claude"
@@ -307,6 +308,9 @@ in
         # Digital Painting
         ".local/share/krita"
 
+        # Japanese IME
+        ".config/mozc" # used by fcitx5-mozc
+
         ".config/nushell"
       ];
       files = [