(C72) [Ovacas (Hirokawa Kouichirou)] Lucky Punch (Lucky Star) [English] [desudesu]
(C66) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 5 (Pretty Cure)
(C75) [Ovacas (Hirokawa Kouichirou)] Ovacas Style 2008 (Kannagi, Queen's Blade, Strike Witches)
(ABC 5) [OVACAS (Hirokawa Kouichirou)] Iro Iro Gal and Dou (Various)
(C78) [OVACAS (Hirokawa Kouichirou)] Love Style Plus (Love Plus) [English] [shakuganexa]
(COMIC1☆2) [OVACAS (Hirokawa Kouichirou)] Kurobeta (Minami-ke)
(C62) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 4 Sokuon (Azumanga-Daioh)
(CR27) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH (Various)
[A-Lucky Murashige no Ran (A-Lucky Murashige)] Lala-chan wa Hatsujouchuu | Lala-chan's Excited (Star Twinkle PreCure) [English] {Doujins.com}
(C60) [OVACAS (Hirokawa Kouichirou)] OVACAS SKETCH 3 (Various)