(SC32) [OVACAS (Hirokawa Kouichirou)] another day (Ojamajo Doremi)
(CR36) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Iron Maiden (Genshiken, Kujibiki Unbalance)
Ovacas Style 2008
Otonano Omochiya Vol. 15
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus)
Otonano Omochiya Vol. 14
COMIC Penguin Club Sanzokuban 2001-04
Hungar x Hungar One Pause (Hunter x Hunter One Piece)
(C56) [Doudan Tsutsuji (Doudantsutsuji, Hirokawa Tomo)] Getten! (Mamotte Shugogetten)
Otonano Omochiya 6 Kan
Otonano Omochiya 6 Kan Ch. 1
Magical? Banana
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)
(COMIC1☆2) [OVACAS (Hirokawa Kouichirou)] Kurobeta (Minami-ke)
(C80) [OVACAS (Hirokawa Kouichirou)] A STYLE. (A Channel)
(C81) [OVACAS (Hirokawa Kouichirou)] SUITE&BITCH (Suite Precure)
Men's Dolphin 1999-11-01 Vol.03
Comic Sigma Volume 1
(C77) [OVACAS (Hirokawa Kouichirou)] Love Style (Love Plus)
(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME) [English] [SaHa]
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 16 [English]
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time (K-ON!)
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni)
Otonano Omochiya Vol.6 - Ch.4
Otonano Omochiya 17
(C83) [OVACAS (Hirokawa Kouichirou)] Buratei Heart. (Joshiraku)
(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
[Hirokawa Kouichirou] Deep Trip | 銷魂之旅 [Chinese]
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni Dash!)
(C67) [OVACAS (Hirokawa Kouichirou)] HIME-hajimeru (My-HiME) [English] [SaHa]
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 EVENT EDITION (Various)
[Anthology] Love Chara Taizen No. 6
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 16 [Chinese]
(C65) [Infinity-Force (Various)] BL Are Go!! (Machine Robo Rescue)
COMIC Penguin Club Sanzokuban 2001-06
(CT20) [OVACAS (Hirokawa Kouichirou)] Bouhatei no Onna. (Joshiraku)
[Hirokawa Tomo] Puripanyu Z
(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 12 Futaba no Ohanashi Matome 2 [English] [Digital] [Ongoing]
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time | After School XX Time (K-ON!) [English] [Darknight]
(C52) [Raimusha (Various)] Ebisu Taisen Kanzenban (Sakura Taisen)
COMIC Penguinclub Sanzokuban 2003-11
Haru Matsuri Chichi Matsuri 2010
KupaaBon 3
COMIC Penguin Club Sanzokuban 2001-08 [Incomplete]
(C69) [KNOCKOUT (Various)] Oshiri de Kyu! 9 (Various)
(ABC 5) [OVACAS (Hirokawa Kouichirou)] Iro Iro Gal and Dou (Various)
(CSP4) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri (School Rumble, Mai-HiME)
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus) [English] [shakuganexa]