(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni)
(C64) [Infinity-Force (Mercy Rabbit, Rokujou Mugi, Buruma Hogero, Hirokawa Kouichirou, Yamashita Woory)] MRR A GO!! (Machine Robo Rescue)
(C77) [OVACAS (Hirokawa Kouichirou)] Love Style (Love Plus)
(Mimiket 3) [OVACAS (Hirokawa Kouichirou)] Zoids Tanekentai Born Free (ZOIDS)
(Suika Musume 3) [Ovacas (Hirokawa Kouichirou)] Asama de Training (Issho ni Training)
[OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia Kaiteiban (Manabi Straight!)
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni Dash!)
(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
(C84) [OVACAS (Hirokawa Kouichirou)] Kedamono-tachi no YAMATO. (Space Battleship Yamato 2199)
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus)
[Hirokawa Kouichirou] A to Z
[Hirokawa Kouichirou] Deep Trip
[OVACAS (Hirokawa Kouichirou)] Kashi 1114 (Ojamajo Doremi)
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE)
(C73) [OVACAS (Hirokawa Kouichirou)] Banchou Densetsu (Minami-ke)
[Hirokawa Kouichirou] PET LIFE
(C79) [OVACAS (Hirokawa Kouichirou)] Tenshi(Bitch) ni Love Song o! (Panty & Stocking with Garterbelt)
(SC16) [Ovacas (Hirokawa Kouichirou)] Nichiyou Asa no 8-ji 30-bu (Ojamajo Doremi)
(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
(CSP4) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri (School Rumble, Mai-HiME)
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)
(Tougetsu-sai) [OVACAS (Hirokawa Kouichirou)] IYASI-K (Pani Poni)
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE) [English] [desudesu]
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!)