(SC16) [Ovacas (Hirokawa Kouichirou)] Nichiyou Asa no 8-ji 30-bu (Ojamajo Doremi)
[Yumeizukosya, OVACAS (Hirokawa Kouichirou)] Ebisu Taisen (Sakura Taisen)
Magical? Banana
COMIC Penguinclub Sanzokuban 2003-08
(C63) [OVACAS (Hirokawa Kouichirou)] Shirobom (Bomberman Jetters)
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 EVENT EDITION (Various)
(Tougetsu-sai) [OVACAS (Hirokawa Kouichirou)] IYASI-K (Pani Poni)
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)
Hungar x Hungar One Pause (Hunter x Hunter One Piece)
[OVACAS (Hirokawa Kouichirou)] Kashi 1114 (Ojamajo Doremi)
COMIC Penguin Club Sanzokuban 2000-09
[Otonano Omochiya (Hirokawa,Yukito)] Otonano Omochiya Vol.13 [English][ChoriScans]
(C67) [OVACAS (Hirokawa Kouichirou)] HIME-hajimeru (My-HiME) [English] [SaHa]
Pachie-bon
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni Dash!)
(C64) [Abellcain (Fujimaru Arikui)] Lucky Come Come (Kujibiki Unbalance)
Otonano Omochiya Vol. 16
COMIC Penguinclub Sanzokuban 2003-01
Otonano Omochiya 6 Kan
(C83) [OVACAS (Hirokawa Kouichirou)] Buratei Heart. (Joshiraku)
Otonano Omochiya Vol. 14
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus)
[Hirokawa Kouichirou] Deep Trip | 銷魂之旅 [Chinese]
KupaaBon 3
Takamori Aiko hamedori manga
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!) [English] [biribiri]
Otonano Omochiya Vol. 1-14
[Anthology] Love Chara Taizen No. 7 (Various)
(C61) [Dangan Densetsu (Hirokawa Tomo)] Kirakira no Haru (AIR, Kanon)
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus) [English] [shakuganexa]
Comic Sigma Volume 1
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni)
(CR27) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH (Various)
Tenshi ni Love Song o!
COMIC Penguinclub Sanzokuban 2002-12
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 3 Kan
Otonano Omochiya 12 Futaba no Ohanashi Matome 2
Otonano Omochiya Vol.6 - Ch.4-5
[Kantou Usagi Gumi] Pink Kami Keikaku (Various)
(COMIC1☆2) [OVACAS (Hirokawa Kouichirou)] Kurobeta (Minami-ke)
(SC23) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Precure Machine (Pretty Cure)
[Hirokawa Kouichirou] Deep Trip
(C55) [OVACAS (Various)] Heppoko Anime Chinpure Koupure (Various)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 15 [English]
Kono subarashī Amahito-chan no demisōsu!
[Hirokaworld (Hirokawa)] Neko Ebon Plus
[Shuudan Bouryoku (集団暴力)] HOOLIGANISM File/10 RECORD OF ALDELAYD ExhibitionDX2
Otonano Omochiya Vol. 13
Men's Dolphin 1999-11-01 Vol.03
(CR27) [Dangan Densetsu Laser (Hirokawa Tomo, Nerima Yoshito)] Kairaku Gensoku Hagurumashiki Soutei Souchi (Revolutionary Girl Utena)
(C67) [OVACAS (Hirokawa Kouichirou)] HIME-Hajime (My-HiME)
(ABC 5) [OVACAS (Hirokawa Kouichirou)] Iro Iro Gal and Dou (Various)
(C61) [OVACAS (Hirokawa Kouichirou)] S.F.3.D (Various)
Two Toned Romps
(C99) [Otonano Omochiya (Hirokawa)] Otonano Omochiya 17 [Chinese]
[Hirokawa Tomo] Fresh Meat! [Chinese]
(Puniket 9) [Hirokaworld (Hirokawa)] Nyaa Hon
(C81) [Manchin Sakura (COSiNE ,Erect Sawaru and more) Chun-li san to COSiNE ni Shuu Shuunen Kinen Hon (Street Fighter)
(CSP4) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri (School Rumble, Mai-HiME)
(C77) [OVACAS (Hirokawa Kouichirou)] Love Style (Love Plus)
(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)
(C69) [KNOCKOUT (Various)] Oshiri de Kyu! 9 (Various)
Otonano Omochiya Vol.6 - Ch.4
Capricon I - Director's Cut
(C66) [INFINITY-FORCE (Various)] VS∞ VURSUS INFINITY (Capcom vs. SNK)
(C62) [Knockout (Various)] Oshiri de Kyu! 7 (Various)
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 (Various)
(C66) [INFINITY-FORCE (Mercy Rabbit)] VS∞ VURSUS INFINITY (Capcom vs. SNK)
(C75) [Ovacas (Hirokawa Kouichirou)] Ovacas Style 2008 (Kannagi, Queen's Blade, Strike Witches)
(C81) [OVACAS (Hirokawa Kouichirou)] SUITE&BITCH (Suite Precure)
(SC19) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Rotation (Gundam SEED)
(Puniket 11) [Hirokaworld (Hirokawa)] Pachie-bon (3-nen B-gumi Kinpachi Sensei Densetsu no Kyoudan ni tate!)
COMIC Penguin Club Sanzokuban 2001-04
(COMIC1) [OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Itazura Drill (Tengen Toppa Gurren Lagann)
[Hirokaworld (Hirokawa)] Shiikibi (Various) [Digital]
(C60) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 3 (Various)
(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
[Amatoro Bow] Hanarete Ite mo Hito ni Fureru Otoko
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE)
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time (K-ON!)
(Puniket 21) [Hirokaworld (Hirokawa)] Kojikabon Plus (Kodomo no Jikan)
(SC32) [OVACAS (Hirokawa Kouichirou)] another day (Ojamajo Doremi)
Otonano Omochiya 17
(C73) [OVACAS (Hirokawa Kouichirou)] Banchou Densetsu (Minami-ke)
Otonano Omochiya 12 Futaba no Ohanashi Matome 12
Otonano Omochiya Vol. 15
(Suika Musume 3) [Ovacas (Hirokawa Kouichirou)] Asama de Training (Issho ni Training)
(C65) [OVACAS (Hirokawa Kouichirou)] FLOW MY TEARS A SENIOR SAID (Uchuu No Stellvia)
[Hirokawa Kouichirou] PET LIFE
Ovacas Style 2008
(C84) [OVACAS (Hirokawa Kouichirou)] Kedamono-tachi no YAMATO. (Space Battleship Yamato 2199)
[Shuudan Bouryoku (Murasaki Syu)] Takanashi-san-chi no 4 Shimai - 1 (WORKING!!)
(Puniket 9) [Marchen Box (Various)] Two Toned Romps (Pretty Cure)
(C79) [OVACAS (Hirokawa Kouichirou)] Tenshi(Bitch) ni Love Song o! (Panty & Stocking with Garterbelt)
(C65) [INFINITY-FORCE (Various)] BL Are Go!! (Machine Robo Rescue)
COMIC Penguinclub Sanzokuban 2003-11
(Comic Castle Final) [Nipopo Crisis, OVACAS (Genka Ichien, Hirokawa Kouichirou) Patsukin Dynamite HEAVEN (Bakusou Kyoudai Lets & Go!!)
COMIC Penguinclub Sanzokuban 2002-10
(C51) [Hiasobi Club (Fumizuki Kou)] NO BRAND LONELY WINTER
(C80) [OVACAS (Hirokawa Kouichirou)] A STYLE. (A Channel)
(C66) [Shuudan Bouryoku (Various)] File/12 Record of Aldelayd - EXHIBITION DX4
(C69) [OVACAS (Hirokawa Kouichirou)] 1-NEN C-GUMI MAHOGUMI (Pani Poni)
[OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia Kaiteiban (Manabi Straight!)
Love Style
[Hirokawa Tomo] Cherry Concerto
[ANTHOLOGY] Meganekko Deluxe
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE) [English] [desudesu]
[Hirokawa Kouichirou] A to Z
[INFINITY-FORCE (Various)] Digitama 04 FRONTIER (Digimon Tamers, Digimon Frontier)
(C56) [Doudan Tsutsuji (Doudantsutsuji, Hirokawa Tomo)] Getten! (Mamotte Shugogetten)
[Anthology] Aokan Special