diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..aa5e2ed
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "_book"]
+	path = _book
+	url = https://storage.sukazyo.cc/Eyre_S/morny-book.git
diff --git a/_book b/_book
new file mode 160000
index 0000000..33e051f
--- /dev/null
+++ b/_book
@@ -0,0 +1 @@
+Subproject commit 33e051fee5acb5118d6c023039ff9c1db6aa0c60