Watch (C57) [OVACAS (Hirokawa Kouichirou)] Doremix Deluxe (Ojamajo Doremi) (C57) [OVACAS (広川浩一郎)] ドレミックス デラックス (おジャ魔女どれみ)

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

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

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

(SC16) [Ovacas (Hirokawa Kouichirou)] Nichiyou Asa no 8-ji 30-bu (Ojamajo Doremi)

(C61) [OVACAS (Hirokawa Kouichirou)] S.F.3.D (Various)

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

(C56) [OVACAS (Various)] Dore Mix (Ojamajo Doremi)

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

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

[OVACAS (Hirokawa Kouichirou)] Kashi 1114 (Ojamajo Doremi)