(C56) [Doudan Tsutsuji (Doudantsutsuji, Hirokawa Tomo)] Getten! (Mamotte Shugogetten)
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE) [English] [desudesu]
[Anthology] Love Chara Taizen No. 7 (Various)
(C61) [OVACAS (Hirokawa Kouichirou)] S.F.3.D (Various)
[Anthology] Love Chara Taizen No. 6
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!) [English] [biribiri]
Love Style
Otonano Omochiya Vol. 15
(C61) [Dangan Densetsu (Hirokawa Tomo)] Kirakira no Haru (AIR, Kanon)
[ANTHOLOGY] Meganekko Deluxe
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni)
Otonano Omochiya 6 Kan Ch. 1
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time | After School XX Time (K-ON!) [English] [Darknight]
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time (K-ON!)
COMIC Penguin Club Sanzokuban 2000-09
COMIC Penguinclub Sanzokuban 2003-12
Two Toned Romps
(C64) [Abellcain (Fujimaru Arikui)] Lucky Come Come (Kujibiki Unbalance)
Otonano Omochiya Vol. 16
(CR27) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH (Various)
Tenshi ni Love Song o!
[Shuudan Bouryoku (集団暴力)] HOOLIGANISM File/10 RECORD OF ALDELAYD ExhibitionDX2
(C66) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 5 (Pretty Cure)
(C51) [Hiasobi Club (Fumizuki Kou)] NO BRAND LONELY WINTER
(C62) [KNOCKOUT (Various)] Oshiri de Kyu! 7 (Various)
(Tougetsu-sai) [OVACAS (Hirokawa Kouichirou)] IYASI-K (Pani Poni)
(CR35) [Abellcain (Fujimaru Arikui)] KALEIDOSCOPE (Kaleidostar)
(C66) [INFINITY-FORCE (Various)] VS∞ VURSUS INFINITY (Capcom vs. SNK)
[Yumeizukosya, OVACAS (Hirokawa Kouichirou)] Ebisu Taisen (Sakura Taisen)
(C64) [Infinity-Force (Mercy Rabbit, Rokujou Mugi, Buruma Hogero, Hirokawa Kouichirou, Yamashita Woory)] MRR A GO!! (Machine Robo Rescue)
(C82) [OVACAS (Hirokawa Kouichirou)] Osaki mo Mae mo Marii-san. (Joshiraku)
(C65) [OVACAS (Hirokawa Kouichirou)] FLOW MY TEARS A SENIOR SAID (Uchuu No Stellvia)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 3 Kan [English]
(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME)
[Hirokawa Kouichirou] Deep Trip
[Amadeus No Isan] Rapid Game {To Heart 2}
(C67) [OVACAS (Hirokawa Kouichirou)] HIME-hajimeru (My-HiME) [English] [SaHa]
COMIC Penguin Club Sanzokuban 2001-06
(SC32) [OVACAS (Hirokawa Kouichirou)] another day (Ojamajo Doremi)
[Shuudan Bouryoku (Murasaki Syu)] Takanashi-san-chi no 4 Shimai - 1 (WORKING!!)
[Anthology] Dennou Butou Musume Vol 5
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 (Various)
(CSP4) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri (School Rumble, Mai-HiME)
Otonano Omochiya Vol. 14
(Puniket 21) [Hirokaworld (Hirokawa)] Kojikabon Plus (Kodomo no Jikan)
[INFINITY-FORCE (Various)] Digitama 04 FRONTIER (Digimon Tamers, Digimon Frontier)
(C65) [INFINITY-FORCE (Various)] BL Are Go!! (Machine Robo Rescue)
(SC23) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Precure Machine (Pretty Cure)
Otonano Omochiya Vol. 1-14
Otonano Omochiya 12 Futaba no Ohanashi Matome 2
(C52) [Raimusha (Various)] Ebisu Taisen Kanzenban (Sakura Taisen)
Haru Matsuri Chichi Matsuri 2010
Pachie-bon
Otonano Omochiya 6 Kan
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star) [English] [desudesu]
[Hirokaworld (Hirokawa)] Shiikibi (Various) [Digital]
[Tamaki Nozomu] Kokuminteki Kanojo Irokawa Mayu no Zenbu
(COMIC1) [OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Itazura Drill (Tengen Toppa Gurren Lagann)
(Puniket 9) [Marchen Box (Various)] Two Toned Romps (Pretty Cure)
[OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Deep impact (Cosmic Baton Girl Comet-san)
(SC19) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Rotation (Gundam SEED)
(C81) [OVACAS (Hirokawa Kouichirou)] SUITE&BITCH (Suite Precure)
(C70) [Knockout, Nikomark (Various)] Chougokubuto | Super Gokubuto (Various)
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE)
(Comic Castle Final) [Nipopo Crisis, OVACAS (Genka Ichien, Hirokawa Kouichirou) Patsukin Dynamite HEAVEN (Bakusou Kyoudai Lets & Go!!)
COMIC Penguinclub Sanzokuban 2002-10
[Anthology] Aokan Special
Capricon I - Director's Cut
After School XX Time