Artist hirokawa-kouichirou92

(C70) [Knockout Nikomark (Various)] Chougokubuto | Super Gokubuto (Various)

(C73) [OVACAS (Hirokawa Kouichirou)] Banchou Densetsu (Minami-ke)

[ANTHOLOGY] Meganekko Deluxe

(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME)

[SYU MURASAKI - HOOLIGANISM] Exhibition - File 12 DX4

[Shuudan Bouryoku (集団暴力)] HOOLIGANISM File/10 RECORD OF ALDELAYD ExhibitionDX2

(CR36) [Abellcain OVACAS (Fujimaru Arikui Hirokawa Kouichirou)] Iron Maiden (Genshiken Kujibiki Unbalance)

(SC23) [Abellcain OVACAS (Fujimaru Arikui Hirokawa Kouichirou)] Precure Machine (Pretty Cure)

(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)

(C67) [OVACAS (Hirokawa Kouichirou)] HIME-Hajime (My-HiME)

(COMIC1) [OVACAS Abellcain (Hirokawa Kouichirou Fujimaru Arikui)] Itazura Drill (Tengen Toppa Gurren Lagann)

[Hirokawa Kouichirou] PET LIFE

(CSP4) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri (School Rumble)

(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)

[OVACAS] IYASI-K

(ABnormal Carnival 5) [OVACAS (Hirokawa Kouichirou)] Iro Iro Gal and Dou (Various)

(C66) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 5 (Pretty Cure)