(C60) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 3 (Various)
[Anthology] Dennou Butou Musume Vol 5
(C74) [Hirokaworld (Hirokawa)] Akiratama (Lucky☆Star)
Otonano Omochiya Vol. 16
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 15 [English]
(SC23) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Precure Machine (Futari wa Precure)
Otonano Omochiya 6 Kan
(Puniket 11) [Hirokaworld (Hirokawa)] Pachie-bon (3-nen B-gumi Kinpachi Sensei Densetsu no Kyoudan ni tate!)
大人のおもちや3巻
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!)
(SC19) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Rotation (Gundam SEED)
COMIC Penguinclub Sanzokuban 2002-10
Hungar x Hungar One Pause (Hunter x Hunter One Piece)
Otonano Omochiya Vol. 15
(C62) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 4 Sokuon (Azumanga-Daioh)
(C52) [Raimusha (Various)] Ebisu Taisen Kanzenban (Sakura Taisen)
(COMIC1) [OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Itazura Drill (Tengen Toppa Gurren Lagann)
(Comic Castle 2005) [Abellcain (Fujimaru Arikui)] EUREKA FIGHT (Eureka seveN)
Otonano Omochiya 12 Futaba no Ohanashi Matome 2
[Hirokawa Tomo] Cherry Concerto
[OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Deep impact (Cosmic Baton Girl Comet-san)
Haru Matsuri Chichi Matsuri 2010
[Hirokawa Tomo] Fresh Meat! [Chinese]
[OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia Kaiteiban (Manabi Straight!)
[ANTHOLOGY] Meganekko Deluxe
(C70) [Knockout, Nikomark (Various)] Chougokubuto | Super Gokubuto (Various)
[Hirokawa Kouichirou] Deep Trip
(Puniket 9) [Hirokaworld (Hirokawa)] Nyaa Hon
(CT20) [OVACAS (Hirokawa Kouichirou)] Bouhatei no Onna. (Joshiraku)
Takamori Aiko hamedori manga
(SC32) [OVACAS (Hirokawa Kouichirou)] another day (Ojamajo Doremi)
Otonano Omochiya Vol.13
(C90) [Hooliganism (Murasaki Syu, Hirokawa Kouichirou)] Kono Subarashii Demi-chan no Demi Sauce! (Demi-chan wa Kataritai, Kono Subarashii Sekai ni Syukufuku o!)
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus)
(CR35) [Abellcain (Fujimaru Arikui)] KALEIDOSCOPE (Kaleidostar)
[Hirokawa Tomo] Fresh Meat!
Otonano Omochiya 17
[Hirokaworld (Hirokawa)] Neko Ebon Plus
COMIC Penguin Club Sanzokuban 2001-04
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star) [English] [desudesu]
Men's Dolphin 1999-11-01 Vol.03
Otonano Omochiya Vol. 14
(C77) [OVACAS (Hirokawa Kouichirou)] Love Style (Love Plus)
COMIC Penguin Club Sanzokuban 2001-06
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus) [English] [shakuganexa]
Otonano Omochiya 12 Futaba no Ohanashi Matome 12
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 3 Kan [English]
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!) [English] [biribiri]
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 16 [Chinese]
[COMIC] Penguinclub Sanzokuban 2003-02
Tenshi ni Love Song o!
(SC16) [Ovacas (Hirokawa Kouichirou)] Nichiyou Asa no 8-ji 30-bu (Ojamajo Doremi)
(C64) [Abellcain (Fujimaru Arikui)] Lucky Come Come (Kujibiki Unbalance)
(C80) [OVACAS (Hirokawa Kouichirou)] A STYLE. (A Channel)
(Tougetsu-sai) [OVACAS (Hirokawa Kouichirou)] IYASI-K (Pani Poni)
(C55) [OVACAS (Various)] Heppoko Anime Chinpure Koupure (Various)
(C64) [KNOCKOUT (Various)] Oshiri de Kyu! 8 (Various)
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time (K-ON!)
[Anthology] Love Chara Taizen No. 7 (Various)
[Anthology] Aokan Special
(C65) [OVACAS (Hirokawa Kouichirou)] FLOW MY TEARS A SENIOR SAID (Uchuu No Stellvia)
(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
Otonano Omochiya Vol.6 - Ch.4
[Otonano Omochiya (Hirokawa,Yukito)] Otonano Omochiya Vol.13 [Chinese]
[Anthology] Love Chara Taizen No. 6
(C57) [OVACAS (Hirokawa Kouichirou)] Doremix Deluxe (Ojamajo Doremi)
[Hirokawa Kouichirou] A to Z
COMIC Penguinclub Sanzokuban 2003-08
(C56) [OVACAS (Various)] Dore Mix (Ojamajo Doremi)
(C66) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 5 (Pretty Cure)
(C75) [Ovacas (Hirokawa Kouichirou)] Ovacas Style 2008 (Kannagi, Queen's Blade, Strike Witches)
[Shuudan Bouryoku (集団暴力)] HOOLIGANISM File/10 RECORD OF ALDELAYD ExhibitionDX2