Ken-chan no oneesan

Kaori Okamoto

as Nanako Kobayashi (Ken's Sister)

Masazumi Okabe

as Kentarô Yamawaki (Spaghetti Shop Owner)

Ushi Tôyama

as Ken'ichi Yamawaki

Kei Ogawa

Kazunori Sasaki

as Kenji Yamawaki

Tamae Kobayashi

as Harumi Tsuchiya

Tomoaki Udou

as Kazuhiko Takeda

Hajime Sekiguchi

as Keisuke Kazaki

Chigusa Takayama

as Office Girl