(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star) (C72) [OVACAS (広川浩一郎)] らっきー☆ぱんち (らき☆すた)

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

(ABC 5) [OVACAS (Hirokawa Kouichirou)] Iro Iro Gal and Dou (Various)

[A-Lucky Murashige no Ran (A-Lucky Murashige)] Lala-chan wa Hatsujouchuu | Lala-chan's Excited (Star Twinkle PreCure) [English] {Doujins.com}

(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)

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

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

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

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