(C54) [OVACAS (Various)] Capricon 1 Director's Cut (Various)
(SC38) [Digital Lover (Nakajima Yuka)] Rough Sketch 40 (Spice and Wolf)
(C61) [OVACAS (Hirokawa Kouichirou)] S.F.3.D (Various)
Secret Sketch
[8 no Ji Club (Hyou)] Makyuu no Oshigoto 1 + Site sketches
Takamori Aiko hamedori manga
(C84) [OVACAS (Hirokawa Kouichirou)] Kedamono-tachi no YAMATO. (Space Battleship Yamato 2199)
(C81) [Renai Mangaka (Naruse Hirofumi)] Love 2 Quad Rough Sketch (Various)
(C75) [Ovacas (Hirokawa Kouichirou)] Ovacas Style 2008 (Kannagi, Queen's Blade, Strike Witches)