Artist kai kousen

(C46) [Karashi Mentaiko, Jiyuu Shuppan Kenkyuusho (Hiraki Naori, Kai Kousen, Yoshida Goten)] MENTAIKO Yuusha Keisatsu J-Decker (Brave Police J-Decker)

(C64) [Jiyuu Shuppan Kenkyuusho, Sakura Karashi Mentaiko (Hiraki Naori, Kai Kousen)] Mariasama Ga Miteru (Maria-sama ga Miteru)

(C52) [Jiyuugaoka Shoutengai, Karashi Mentaiko (Hiraki Naori, Kai Kousen, Yoshida Goten)] MENTAIKO To Heart (To Heart)

[Jiyuugaoka Shoutengai, Mentaiko Gakari (Hiraki Naori, Yoshida Goten, Kai Kousen)] MENTAIKO KEES COLLECTION (Various)