diff --git a/users/ryotahirano.json b/users/ryotahirano.json
new file mode 100644
index 00000000..689e9c11
--- /dev/null
+++ b/users/ryotahirano.json
@@ -0,0 +1 @@
+{"copyright":"RyotaHirano"}
\ No newline at end of file