Ken-chan no oneesan

Kaori Okamoto

(Nanako Kobayashi (Ken's Sister))

Masazumi Okabe

(Kentarô Yamawaki (Spaghetti Shop Owner))

Ushi Toyama

(Ken'ichi Yamawaki)

Kei Ogawa

Kazunori Sasaki

(Kenji Yamawaki)

Tamae Kobayashi

(Harumi Tsuchiya)

Tomoaki Udou

(Kazuhiko Takeda)

Hajime Sekiguchi

(Keisuke Kazaki)

Chigusa Takayama

(Office Girl)