奈都塚さんの秘密。
Natsuzuka-san no Himitsu. has 6 volumes.
Natsuzuka-san no Himitsu. is currently finished.
Natsuzuka-san no Himitsu. was written by Ryo.
Natsuzuka-san no Himitsu. was published Dec 31, 2012 to Dec 30, 2014.
Ryo also made