(SC16) [Ovacas (Hirokawa Kouichirou)] Nichiyou Asa no 8-ji 30-bu (Ojamajo Doremi) Hentai (サンクリ16) [OVACAS (広川浩一郎)] 日曜朝の８時３０分 (おジャ魔女どれみ)

(C61) [OVACAS (Hirokawa Kouichirou)] S.F.3.D (Various)

(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE)

(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 (Various)

[OVACAS (Hirokawa Kouichirou)] Kashi 1114 (Ojamajo Doremi)

(SC32) [OVACAS (Hirokawa Kouichirou)] another day (Ojamajo Doremi)

(CR27) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH (Various)

(C57) [OVACAS (Hirokawa Kouichirou)] Doremix Deluxe (Ojamajo Doremi)

(Puniket 6) [OVACAS (Hirokawa Kouichirou)] AxA (Ojamajo Doremi)

(C56) [OVACAS (Various)] Dore Mix (Ojamajo Doremi)

(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 EVENT EDITION (Various)