diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..59314e8
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "themes/toha"]
+	path = themes/toha
+	url = https://github.com/hugo-toha/toha.git
diff --git a/themes/toha b/themes/toha
new file mode 160000
index 0000000..83d10c5
--- /dev/null
+++ b/themes/toha
@@ -0,0 +1 @@
+Subproject commit 83d10c59ad6001af14733b10539baeaa0550c14f