Otonano Omochiya 12 Futaba no Ohanashi Matome 2
Men's Dolphin 1999-11-01 Vol.03
(C64) [KNOCKOUT (Various)] Oshiri de Kyu! 8 (Various)
[Otonano Omochiya (Hirokawa,Yukito)] Otonano Omochiya Vol.13 [Chinese]
(Puniket 12) [OVACAS (Hirokawa Kouichirou)] Sensei dazo! (Pani Poni Dash!)
(C63) [OVACAS (Hirokawa Kouichirou)] Shirobom (Bomberman Jetters)
Otonano Omochiya 6 Kan
Ovacas Style 2008
(C61) [OVACAS (Hirokawa Kouichirou)] S.F.3.D (Various)
After School XX Time
(COMIC1) [OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Itazura Drill (Tengen Toppa Gurren Lagann)
COMIC Penguin Club Sanzokuban 2000-09
(C71) [OVACAS (Hirokawa Kouichirou)] BITCH STYLE (WITCHBLADE) [English] [desudesu]
Otonano Omochiya 6 Kan
(Tougetsu-sai) [OVACAS (Hirokawa Kouichirou)] IYASI-K (Pani Poni)
(Puniket 21) [Hirokaworld (Hirokawa)] Kojikabon Plus (Kodomo no Jikan)
Takamori Aiko hamedori manga
[Hirokaworld (Hirokawa)] petta
(CR35) [Abellcain (Fujimaru Arikui)] KALEIDOSCOPE (Kaleidostar)
[Shuudan Bouryoku (集団暴力)] HOOLIGANISM File/10 RECORD OF ALDELAYD ExhibitionDX2
[Dangan Densetsu (Hirokawa Tomo)] Fairy Shape (Final Fantasy VIII)
(C79) [OVACAS (Hirokawa Kouichirou)] Tenshi(Bitch) ni Love Song o! (Panty & Stocking with Garterbelt)
(C90) [Hooliganism (Murasaki Syu, Hirokawa Kouichirou)] Kono Subarashii Demi-chan no Demi Sauce! (Demi-chan wa Kataritai, Kono Subarashii Sekai ni Syukufuku o!)
Kono subarashī Amahito-chan no demisōsu!
[Otonano Omochiya (Hirokawa)] Otonano Omochiya 3 Kan [English]
COMIC Penguin Club Sanzokuban 2001-04
(CR27) [Dangan Densetsu Laser (Hirokawa Tomo, Nerima Yoshito)] Kairaku Gensoku Hagurumashiki Soutei Souchi (Revolutionary Girl Utena)