(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
(C79) [OVACAS (Hirokawa Kouichirou)] Tenshi(Bitch) ni Love Song o! (Panty & Stocking with Garterbelt)
COMIC Penguinclub Sanzokuban 2003-08
(Puniket 19) [Hirokaworld (Hirokawa)] Shiikibi (Various)
Otonano Omochiya Vol. 16
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 3 Kan [English]
Otonano Omochiya Vol. 13
(C62) [Knockout (Various)] Oshiri de Kyu! 7 (Various)
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE) [English] [desudesu]
(SC23) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Precure Machine (Futari wa Precure)
(C64) [Infinity-Force (Mercy Rabbit, Rokujou Mugi, Buruma Hogero, Hirokawa Kouichirou, Yamashita Woory)] MRR A GO!! (Machine Robo Rescue)
[Hirokaworld (Hirokawa)] Neko Ebon Plus
[Hirokaworld (Hirokawa)] petta
COMIC Penguin Club Sanzokuban 2001-06
(Suika Musume 3) [Ovacas (Hirokawa Kouichirou)] Asama de Training (Issho ni Training)
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time (K-ON!)
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni)
(C67) [OVACAS (Hirokawa Kouichirou)] HIME-Hajime (My-HiME)
(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)
[Hirokawa Kouichirou] A to Z
[Anthology] Dennou Butou Musume Vol 5
(C57) [OVACAS (Hirokawa Kouichirou)] Doremix Deluxe (Ojamajo Doremi)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 12 Futaba no Ohanashi Matome 2 [English] [Digital] [Ongoing]
[ANTHOLOGY] Meganekko Deluxe
Men's Dolphin 1999-11-01 Vol.03
(Puniket 9) [Hirokaworld (Hirokawa)] Nyaa Hon
(Tougetsu-sai) [OVACAS (Hirokawa Kouichirou)] IYASI-K (Pani Poni)
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 16 [English]
[Hirokawa Kouichirou] Deep Trip
(C64) [Abellcain (Fujimaru Arikui)] Lucky Come Come (Kujibiki Unbalance)
(C65) [Infinity-Force (Various)] BL Are Go!! (Machine Robo Rescue)
[COMIC] Penguinclub Sanzokuban 2003-02
(C69) [KNOCKOUT (Various)] Oshiri de Kyu! 9 (Various)
[Kantou Usagi Gumi] Pink Kami Keikaku (Various)
COMIC Penguinclub Sanzokuban 2003-01
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!) [English] [biribiri]
(CR27) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH (Various)
Two Toned Romps
[Amatoro Bow] Hanarete Ite mo Hito ni Fureru Otoko
(Comic Castle 2005) [Abellcain (Fujimaru Arikui)] EUREKA FIGHT (Eureka seveN)
(C84) [OVACAS (Hirokawa Kouichirou)] Kedamono-tachi no YAMATO. (Space Battleship Yamato 2199)
[Shuudan Bouryoku (集団暴力)] HOOLIGANISM File/10 RECORD OF ALDELAYD ExhibitionDX2
Otonano Omochiya 12 Futaba no Ohanashi Matome 2
(Mimiket 3) [OVACAS (Hirokawa Kouichirou)] Zoids Tanekentai Born Free (ZOIDS)
(C52) [Raimusha (Various)] Ebisu Taisen Kanzenban (Sakura Taisen)
(C61) [Dangan Densetsu (Hirokawa Tomo)] Kirakira no Haru (AIR, Kanon)
(C82) [OVACAS (Hirokawa Kouichirou)] Osaki mo Mae mo Marii-san. (Joshiraku)
(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 16 [Chinese]
(C80) [OVACAS (Hirokawa Kouichirou)] A STYLE. (A Channel)
[Anthology] Love Chara Taizen No. 7 (Various)
大人のおもちや3巻
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus) [English] [shakuganexa]
(C69) [OVACAS (Hirokawa Kouichirou)] 1-NEN C-GUMI MAHOGUMI (Pani Poni)
[OVACAS (Hirokawa Kouichirou)] Kashi 1114 (Ojamajo Doremi)
(C74) [Hirokaworld (Hirokawa)] Akiratama (Lucky☆Star)
(COMIC1) [OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Itazura Drill (Tengen Toppa Gurren Lagann)
[Otonano Omochiya (Hirokawa,Yukito)] Otonano Omochiya Vol.13 [Chinese]
[Anthology] Love Chara Taizen No. 6
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 14 [English] [ChoriScans]
(C66) [INFINITY-FORCE (Mercy Rabbit)] VS∞ VURSUS INFINITY (Capcom vs. SNK)
Tenshi ni Love Song o!
Otonano Omochiya 6 Kan
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!)
COMIC Penguinclub Sanzokuban 2003-11
(Comic Castle Final) [Nipopo Crisis, OVACAS (Genka Ichien, Hirokawa Kouichirou) Patsukin Dynamite HEAVEN (Bakusou Kyoudai Lets & Go!!)
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star) [English] [desudesu]
COMIC Penguin Club Sanzokuban 2001-04
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 EVENT EDITION (Various)
Kono subarashī Amahito-chan no demisōsu!
(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME) [English] [SaHa]