COMIC Penguin Club Sanzokuban 2001-06
(SC16) [Ovacas (Hirokawa Kouichirou)] Nichiyou Asa no 8-ji 30-bu (Ojamajo Doremi)
(C56) [OVACAS (Various)] Dore Mix (Ojamajo Doremi)
Ovacas Style 2008
(C65) [INFINITY-FORCE (Various)] BL Are Go!! (Machine Robo Rescue)
COMIC Penguin Club Sanzokuban 2001-04
[Anthology] Love Chara Taizen No. 6
Otonano Omochiya 17
[Hirokaworld (Hirokawa)] petta
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 15 [English]
[Hirokaworld (Hirokawa)] Shiikibi (Various) [Digital]
[Hirokawa Tomo] Puripanyu Z
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus)
(CR27) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH (Various)
(C61) [OVACAS (Hirokawa Kouichirou)] S.F.3.D (Various)
(C64) [Abellcain (Fujimaru Arikui)] Lucky Come Come (Kujibiki Unbalance)
Otonano Omochiya 12 Futaba no Ohanashi Matome 12
(C64) [Infinity-Force (Mercy Rabbit, Rokujou Mugi, Buruma Hogero, Hirokawa Kouichirou, Yamashita Woory)] MRR A GO!! (Machine Robo Rescue)
[Amatoro Bow] Hanarete Ite mo Hito ni Fureru Otoko
Takamori Aiko hamedori manga
(C63) [OVACAS (Hirokawa Kouichirou)] Shirobom (Bomberman Jetters)
(C64) [KNOCKOUT (Various)] Oshiri de Kyu! 8 (Various)
COMIC Penguinclub Sanzokuban 2003-12
(Suika Musume 3) [Ovacas (Hirokawa Kouichirou)] Asama de Training (Issho ni Training)
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!) [English] [biribiri]
KupaaBon 3
Otonano Omochiya 6 Kan
Otonano Omochiya Vol. 15
(C66) [Shuudan Bouryoku (Various)] File/12 Record of Aldelayd - EXHIBITION DX4
(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time (K-ON!)
Otonano Omochiya 12 Futaba no Ohanashi Matome 2
Otonano Omochiya Vol. 16
(Comic Castle 2005) [Abellcain (Fujimaru Arikui)] EUREKA FIGHT (Eureka seveN)
(C62) [KNOCKOUT (Various)] Oshiri de Kyu! 7 (Various)
(CT20) [OVACAS (Hirokawa Kouichirou)] Bouhatei no Onna. (Joshiraku)
(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)
(C70) [OVACAS (Hirokawa Kouichirou)] Magical? Banana (Renkin 3-kyuu Magical? Pokaan)
Otonano Omochiya Vol.13
(C57) [OVACAS (Hirokawa Kouichirou)] Doremix Deluxe (Ojamajo Doremi)
Otonano Omochiya 6 Kan Ch. 1
(C65) [OVACAS (Hirokawa Kouichirou)] FLOW MY TEARS A SENIOR SAID (Uchuu No Stellvia)
[Hirokawa Tomo] Fresh Meat!
(Puniket 9) [Hirokaworld (Hirokawa)] Nyaa Hon
(C55) [OVACAS (Various)] Heppoko Anime Chinpure Koupure (Various)
(Comic Castle Final) [Nipopo Crisis, OVACAS (Genka Ichien, Hirokawa Kouichirou) Patsukin Dynamite HEAVEN (Bakusou Kyoudai Lets & Go!!)
(C68) [OVACAS (Hirokawa Kouichirou)] MAI-CCHING (Mai-HiME)
(C81) [OVACAS (Hirokawa Kouichirou)] SUITE&BITCH (Suite Precure)
[Anthology] Dennou Butou Musume Vol 5
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 16 [English]
(C77) [OVACAS (Hirokawa Kouichirou)] Love Style (Love Plus)
大人のおもちや3巻
(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)
(C62) [Knockout (Various)] Oshiri de Kyu! 7 (Various)
Otonano Omochiya Vol. 14
(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 (Various)
(CR27) [Dangan Densetsu Laser (Hirokawa Tomo, Nerima Yoshito)] Kairaku Gensoku Hagurumashiki Soutei Souchi (Revolutionary Girl Utena)
[Tamaki Nozomu] Kokuminteki Kanojo Irokawa Mayu no Zenbu
(Puniket 19) [Hirokaworld (Hirokawa)] Shiikibi (Various)
(C74) [Hirokaworld (Hirokawa)] Akiratama (Lucky☆Star)
(CR36) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Iron Maiden (Genshiken, Kujibiki Unbalance)
(C79) [OVACAS (Hirokawa Kouichirou)] Tenshi(Bitch) ni Love Song o! (Panty & Stocking with Garterbelt)
[Shuudan Bouryoku (Murasaki Syu)] Takanashi-san-chi no 4 Shimai - 1 (WORKING!!)
(SC23) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Precure Machine (Futari wa Precure)
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni)
Hungar x Hungar One Pause (Hunter x Hunter One Piece)
(C76) [OVACAS (Hirokawa Kouichirou)] Asamade Training (Issho ni Training)
(C69) [KNOCKOUT (Various)] Oshiri de Kyu! 9 (Various)
Comic Sigma Volume 1
[Hirokaworld (Hirokawa)] Neko Ebon Plus
(C74) [OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] S.M.S Niyoukoso! (Macross Frontier)
[Hirokawa Kouichirou] Deep Trip
[Hirokawa Kouichirou] PET LIFE
(C78) [Shuudan Bouryoku (Murasaki Syu)] Hooliganism 17 Record of ALDELAYD Act.12 Exhibition DX9 (English) =LWB=
[Shuudan Bouryoku (集団暴力)] HOOLIGANISM File/10 RECORD OF ALDELAYD ExhibitionDX2
(C66) [INFINITY-FORCE (Various)] VS∞ VURSUS INFINITY (Capcom vs. SNK)
[Anthology] Aokan Special
(Puniket 9) [Marchen Box (Various)] Two Toned Romps (Pretty Cure)
(C56) [Doudan Tsutsuji (Doudantsutsuji, Hirokawa Tomo)] Getten! (Mamotte Shugogetten)
(C65) [Infinity-Force (Various)] BL Are Go!! (Machine Robo Rescue)
[Otonano Omochiya (Hirokawa,Yukito)] Otonano Omochiya Vol.13 [Chinese]
(C83) [OVACAS (Hirokawa Kouichirou)] Buratei Heart. (Joshiraku)
(Tougetsu-sai) [OVACAS (Hirokawa Kouichirou)] IYASI-K (Pani Poni)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 14 [English] [ChoriScans]
(Futaket vs. ABC ~Hentaisai~) [OVACAS (Hirokawa Kouichirou)] Gakuen Erotopia (Manabi Straight!)
[Otonano Omochiya (Hirokawa)] Otonano Omochiya Vol. 16 [Chinese]
(Puniket 21) [Hirokaworld (Hirokawa)] Kojikabon Plus (Kodomo no Jikan)
[Hirokawa Tomo] Cherry Concerto
[Hirokawa Kouichirou] A to Z
(C84) [OVACAS (Hirokawa Kouichirou)] Kedamono-tachi no YAMATO. (Space Battleship Yamato 2199)
Two Toned Romps
(C80) [OVACAS (Hirokawa Kouichirou)] A STYLE. (A Channel)