[Nishikousaka Kouhei] Okawari Jiyuu Dayo [西高坂耕平] おかわり自由だよっ

[Nishikousaka Kouhei] Kimi to Houkago

(SPARK10) [san-san (Oyamada Dayo)] Slow Starter (Touken Ranbu)

[Nishikousaka Kouhei] Kiss wa Virgin [Incomplete]

[Takanaga Kouhei] Tsugakuro | School Commute Ch. 1-5 [English] [S.T.A.L.K.E.R.] [Digital]

[Nishikousaka Kouhei] Kimi to Houkago

(Reitaisai 9) [Okawari Jiyuu (Shamoji)] Yukata no Kimi (Touhou Project)

[Takanaga Kouhei] Tsugakuro | School Commute Ch. 1-2 [English] [S.T.A.L.K.E.R.] [Digital]

[Takanaga Kouhei] Tsugakuro | School Commute Ch. 1-4 [English] [S.T.A.L.K.E.R.] [Digital]

[Takanaga Kouhei] Pantsu Haite! (Cotton☆Pants) [English] {Hennojin} [Digital]

[Nishikousaka Kouhei] Kiss wa VIRGIN