(C75) [Ovacas (Hirokawa Kouichirou)] Ovacas Style 2008 (Kannagi, Queen's Blade, Strike Witches)

(C62) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 4 Sokuon (Azumanga-Daioh)

(CR27) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH (Various)

[OVACAS] OVACAS SKETCH 2

(C60) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 3 (Various)

(C66) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 5 (Pretty Cure)

[TOWA.] Hidamari Sketch 6-kan Kinen "Ero Soushuuhen" (Hidamari Sketch)

(C75) [FESTA. (Yoshitani Motoka)] Bousou Hidamari Choutokkyuu (Hidamari Sketch)

[FESTA. (Yoshitani Motoka)] Bousou Hidamari Tokkyuu (Hidamari Sketch)

(SC36) [FESTA. (Yoshitani Motoka)] Gekitou!? Hidamari Mahjong (Hidamari Sketch)

[DIRTY OLD MEN'S (Parcy, Kusato, Touya Kakashi)] Hidamari Shasei Taikai (Hidamari Sketch)

(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus) [English] [shakuganexa]

(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star)

(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)

(COMIC1☆2) [OVACAS (Hirokawa Kouichirou)] Kurobeta (Minami-ke)

[OVACAS, Abellcain (Hirokawa Kouichirou, Fujimaru Arikui)] Deep impact (Cosmic Baton Girl Comet-san)

(C83) [OVACAS (Hirokawa Kouichirou)] Buratei Heart. (Joshiraku)

(C80) [OVACAS (Hirokawa Kouichirou)] A STYLE. (A Channel)

(C81) [OVACAS (Hirokawa Kouichirou)] SUITE&BITCH (Suite Precure)

(C79) [OVACAS (Hirokawa Kouichirou)] Tenshi(Bitch) ni Love Song o! (Panty & Stocking with Garterbelt)

(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 (Various)

(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star) [English] [desudesu]

(CSP5) [OVACAS (Hirokawa Kouichirou)] Haru Matsuri Chichi Matsuri 2010 EVENT EDITION (Various)

(Comic Castle Final) [Nipopo Crisis, OVACAS (Genka Ichien, Hirokawa Kouichirou) Patsukin Dynamite HEAVEN (Bakusou Kyoudai Lets & Go!!)

(C63) [OVACAS (Hirokawa Kouichirou)] Shirobom (Bomberman Jetters)

(C76) [OVACAS (Hirokawa Kouichirou)] Asamade Training (Issho ni Training)

(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time (K-ON!)

(C76) [OVACAS (Hirokawa Kouichirou)] Houkago XX Time | After School XX Time (K-ON!) [English] [Darknight]

(C69) [OVACAS (Hirokawa Kouichirou)] 1-NEN C-GUMI MAHOGUMI (Pani Poni)

(C55) [OVACAS (Various)] Heppoko Anime Chinpure Koupure (Various)

(SC32) [OVACAS (Hirokawa Kouichirou)] another day (Ojamajo Doremi)

(Puniket 6) [OVACAS (Hirokawa Kouichirou)] AxA (Ojamajo Doremi)

(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)

(SC19) [Abellcain, OVACAS (Fujimaru Arikui, Hirokawa Kouichirou)] Rotation (Gundam SEED)

(C65) [OVACAS (Hirokawa Kouichirou)] FLOW MY TEARS A SENIOR SAID (Uchuu No Stellvia)