Watch (C67) [OVACAS (Hirokawa Kouichirou)] HIME-Hajime (My-HiME) (C67) [OVACAS (広川浩一郎)] HiME-始 (舞-HiME)

(C81) [OVACAS (Hirokawa Kouichirou)] SUITE&BITCH (Suite Precure)

(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time | After School XX Time (K-ON!) [English] [Darknight]

[OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Deep impact (Cosmic Baton Girl Comet-san)

(C62) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 4 Sokuon (Azumanga-Daioh)

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

(C63) [OVACAS (Hirokawa Kouichirou)] Shirobom (Bomberman Jetters)

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

(C65) [OVACAS (Hirokawa Kouichirou)] FLOW MY TEARS A SENIOR SAID (Uchuu No Stellvia)

(C83) [OVACAS (Hirokawa Kouichirou)] Buratei Heart. (Joshiraku)

(C67) [OVACAS (Hirokawa Kouichirou)] HIME-hajimeru (My-HiME) [English] [SaHa]