Otonano Omochiya Vol. 14
(Puniket 21) [Hirokaworld (Hirokawa)] Kojikabon Plus (Kodomo no Jikan)
(C67) [OVACAS (Hirokawa Kouichirou)] HIME-hajimeru (My-HiME) [English] [SaHa]
[Hirokaworld (Hirokawa)] Neko Ebon Plus
(C69) [OVACAS (Hirokawa Kouichirou)] 1-NEN C-GUMI MAHOGUMI (Pani Poni)
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)
(Puniket 6) [OVACAS (Hirokawa Kouichirou)] AxA (Ojamajo Doremi)
(SC16) [Ovacas (Hirokawa Kouichirou)] Nichiyou Asa no 8-ji 30-bu (Ojamajo Doremi)
Otonano Omochiya 12 Futaba no Ohanashi Matome 2
(COMIC1☆2) [OVACAS (Hirokawa Kouichirou)] Kurobeta (Minami-ke)
Otonano Omochiya Vol.13
COMIC Penguin Club Sanzokuban 2000-09
Magical? Banana
[ANTHOLOGY] Meganekko Deluxe
(C84) [OVACAS (Hirokawa Kouichirou)] Kedamono-tachi no YAMATO. (Space Battleship Yamato 2199)
(C74) [Hirokaworld (Hirokawa)] Akiratama (Lucky☆Star)
(Comic Castle 2005) [Abellcain (Fujimaru Arikui)] EUREKA FIGHT (Eureka seveN)
(CT20) [OVACAS (Hirokawa Kouichirou)] Bouhatei no Onna. (Joshiraku)
Ovacas Style 2008
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!)
[Hirokawa Kouichirou] Deep Trip | 銷魂之旅 [Chinese]
(C65) [INFINITY-FORCE (Various)] BL Are Go!! (Machine Robo Rescue)
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE)
[OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia Kaiteiban (Manabi Straight!)
Men's Dolphin 1999-11-01 Vol.03
[Anthology] Love Chara Taizen No. 7 (Various)
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time (K-ON!)
COMIC Penguinclub Sanzokuban 2003-01
(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
[COMIC] Penguinclub Sanzokuban 2003-02
[INFINITY-FORCE (Various)] Digitama 04 FRONTIER (Digimon Tamers, Digimon Frontier)
Love Style
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star) [English] [desudesu]
Otonano Omochiya Vol.6 - Ch.4-5
Otonano Omochiya 6 Kan
(ABC 5) [OVACAS (Hirokawa Kouichirou)] Iro Iro Gal and Dou (Various)
Otonano Omochiya 12 Futaba no Ohanashi Matome 12
[Kantou Usagi Gumi] Pink Kami Keikaku (Various)
(C61) [OVACAS (Hirokawa Kouichirou)] S.F.3.D (Various)
(Tougetsu-sai) [OVACAS (Hirokawa Kouichirou)] IYASI-K (Pani Poni)
(Puniket 19) [Hirokaworld (Hirokawa)] Shiikibi (Various)
Pachie-bon
(C66) [Shuudan Bouryoku (Various)] File/12 Record of Aldelayd - EXHIBITION DX4
(C69) [KNOCKOUT (Various)] Oshiri de Kyu! 9 (Various)
[Hirokawa Kouichirou] Deep Trip
Otonano Omochiya 17
(C57) [OVACAS (Hirokawa Kouichirou)] Doremix Deluxe (Ojamajo Doremi)
[Hirokawa Kouichirou] PET LIFE
Tenshi ni Love Song o!
(C83) [OVACAS (Hirokawa Kouichirou)] Buratei Heart. (Joshiraku)
(Suika Musume 3) [Ovacas (Hirokawa Kouichirou)] Asama de Training (Issho ni Training)
Haru Matsuri Chichi Matsuri 2010
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni Dash!)
Comic Sigma Volume 1
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus) [English] [shakuganexa]
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE) [English] [desudesu]
Otonano Omochiya Vol. 13
[Anthology] Aokan Special
(C64) [Abellcain (Fujimaru Arikui)] Lucky Come Come (Kujibiki Unbalance)
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus)
(C80) [OVACAS (Hirokawa Kouichirou)] A STYLE. (A Channel)
Otonano Omochiya Vol. 1-14
(COMIC1) [OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Itazura Drill (Tengen Toppa Gurren Lagann)
(C70) [Knockout, Nikomark (Various)] Chougokubuto | Super Gokubuto (Various)
[Anthology] Love Chara Taizen No. 6
[Hirokawa Tomo] Puripanyu Z
(C79) [OVACAS (Hirokawa Kouichirou)] Tenshi(Bitch) ni Love Song o! (Panty & Stocking with Garterbelt)
(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME) [English] [SaHa]
(C82) [OVACAS (Hirokawa Kouichirou)] Osaki mo Mae mo Marii-san. (Joshiraku)
(C56) [Doudan Tsutsuji (Doudantsutsuji, Hirokawa Tomo)] Getten! (Mamotte Shugogetten)
(C67) [OVACAS (Hirokawa Kouichirou)] HIME-Hajime (My-HiME)
(C81) [OVACAS (Hirokawa Kouichirou)] SUITE&BITCH (Suite Precure)
Otonano Omochiya Vol. 15
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time | After School XX Time (K-ON!) [English] [Darknight]
COMIC Penguinclub Sanzokuban 2002-12
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 (Various)
(C65) [OVACAS (Hirokawa Kouichirou)] FLOW MY TEARS A SENIOR SAID (Uchuu No Stellvia)
Kono subarashī Amahito-chan no demisōsu!
COMIC Penguin Club Sanzokuban 2001-04
(CR36) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Iron Maiden (Genshiken, Kujibiki Unbalance)
Otonano Omochiya Vol.6 - Ch.4
(SC27) [Hirokaworld (Hirokawa)] 15/21 (3-nen B-gumi Kinpachi Sensei Densetsu no Kyoudan ni tate!)
(C81) [Manchin Sakura (COSiNE ,Erect Sawaru and more) Chun-li san to COSiNE ni Shuu Shuunen Kinen Hon (Street Fighter)
Otonano Omochiya Vol. 16
COMIC Penguin Club Sanzokuban 2001-06
(C51) [Hiasobi Club (Fumizuki Kou)] NO BRAND LONELY WINTER
(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)
(C78) [Shuudan Bouryoku (Murasaki Syu)] Hooliganism 17 Record of ALDELAYD Act.12 Exhibition DX9 (English) =LWB=
(C56) [OVACAS (Various)] Dore Mix (Ojamajo Doremi)
(Puniket 9) [Marchen Box (Various)] Two Toned Romps (Pretty Cure)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 3 Kan
(C90) [Hooliganism (Murasaki Syu, Hirokawa Kouichirou)] Kono Subarashii Demi-chan no Demi Sauce! (Demi-chan wa Kataritai, Kono Subarashii Sekai ni Syukufuku o!)
(C52) [Raimusha (Various)] Ebisu Taisen Kanzenban (Sakura Taisen)
(C73) [OVACAS (Hirokawa Kouichirou)] Banchou Densetsu (Minami-ke)
COMIC Penguinclub Sanzokuban 2003-08
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni)
(CR27) [Dangan Densetsu Laser (Hirokawa Tomo, Nerima Yoshito)] Kairaku Gensoku Hagurumashiki Soutei Souchi (Revolutionary Girl Utena)
After School XX Time