(C66) [Koutarou With T (Koutarou, Oyama Yasunaga, Tecchan)] GIRL POWER Vol.18 (Dead or Alive)
(CR36) [Koutarou With T (Koutarou, Oyama Yasunaga, Tecchan)] Girl Power Vol. 19 (Various)
[Oogoshi Koutarou] Ryouki Keiji Marusai - detective investigating bizarre case;MARUSAI -
(C68) [Koutarou With T (Koutarou, Oyama Yasunaga, Tecchan)] GIRL POWER vol.21 (Various)
[Koutarou With T] GIRL POWER VOL.03
[Koutarou with T] メガボインワイフ
(CR32) [Koutarou With T (Various)] Girl Power Vol. 11 (Urusei Yatsura)
[Koutarou With T] GIRL POWER VOL.04
Megaman & Splashwoman
(C61) [Koutarou With T (Koutarou, Oyama Yasunaga, Tecchan)] GIRL POWER Vol.9 (Dirty Pair)