diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..ea23fe1
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,12 @@
+[submodule "card"]
+	path = card
+	url = git@git.syui.ai:ai/card
+[submodule "at"]
+	path = at
+	url = git@git.syui.ai:ai/at
+[submodule "yui"]
+	path = yui
+	url = git@git.syui.ai:ai/yui
+[submodule "world"]
+	path = world
+	url = git@git.syui.ai:ai/world
diff --git a/at b/at
new file mode 160000
index 0000000..ded3110
--- /dev/null
+++ b/at
@@ -0,0 +1 @@
+Subproject commit ded3110fceff2e730e6fc5e8fa43c55bd2c6b976
diff --git a/card b/card
new file mode 160000
index 0000000..4a1594b
--- /dev/null
+++ b/card
@@ -0,0 +1 @@
+Subproject commit 4a1594bd118487499b7f5bd3915fa7646ae457f3
diff --git a/world b/world
new file mode 160000
index 0000000..0dc2cb9
--- /dev/null
+++ b/world
@@ -0,0 +1 @@
+Subproject commit 0dc2cb9ecfdf56131eea4fc9cd2c0d57deed2dd9
diff --git a/yui b/yui
new file mode 160000
index 0000000..dd8ecbb
--- /dev/null
+++ b/yui
@@ -0,0 +1 @@
+Subproject commit dd8ecbbcd2b7778892170a61dd63cfd69256f905