(C51) [Wonderful One (Koutarou)] Four Sticks+ (various)
平成27年だものHなツナのヒバツナ本があってもいいじゃない!! (Katekyo Hitman REBORN!)
[Yu-chi] Mako-chan no Osoi Kata (THE iDOLM@STER)
[Kentarou] RPG Role Playing Girl [korean]
[Koutarou] Poolside Ecstasy [Namaiki 2007-05]
[Koutarou With T] GIRL POWER Vol.6 (ZOIDS)
(C57) [Q-bit (Koutarou, Q-10)] Q-bit vol.4: My Name is Fujiko (Lupin III)
[Koutarou With T] GIRL POWER 14 (Air Master)
[Koutarou] Kyonyuu Santa no Present (COMIC Bazooka 2013-01) [Digital]
[Koutarou With T] GIRL POWER VOL.03