Secret lesson - Himitsu Jugyou [木谷さい] 秘蜜授業

[Himitsu Kessha M (Kitahara Aki)] Sweet～GOOD-BYE MY SWEET PAIN～ (The King of Braves GaoGaiGar)

[Himitsu Kessha M (Kitahara Aki)] Tokimeki gurubi (Tokimeki Memorial)

(C50) [Himitsu Kessha M (Kitahara Aki)] Tokimeki Guru Bii ~Densetsu no Ki no Shita de~ (Tokimeki Memorial)

(C76) [Himitsu Kessha M (Kitahara Aki)] Kamen Yuutousei to Hentai Shinshi. (Amagami)

(C66) [Himitsu Kessha M (Kitahara Aki)] ZEON Lost War Chronicles (Mobile Suit Gundam)

Himitsu no Mamoritai Katsudou | Protection Squad's Secret Activities

(C52) [Himitsu Kessha M (Kitahara Aki)] Amai Mitsu no Imashime (Darkstalkers )

(C74) [Hard Puncher Maniax (Shibahara Gocho)] Haruka Secret Service (Nogizaka Haruka no Himitsu)

(C70) [Himitsu Kessha M (Kitahara Aki)] ZEON Lost War Chronicles GCB (Gundam)

(C62) [Himitsu Kessha M (Kitahara Aki)] Kyoushi no Koi Seito no Ai - SIDE:KEI (Onegai Teacher)