(C76) [OVACAS (Hirokawa Kouichirou)] Asamade Training (Issho ni Training) (C76) [OVACAS (広川浩一郎)] あさまでとれーにんぐ (いっしょにとれーにんぐ)

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

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

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

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

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

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

(Suika Musume 3) [Ovacas (Hirokawa Kouichirou)] Asama de Training (Issho ni Training)

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

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

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