The Japanese Belly Button

Helen Amatsu / Momoe / Junko

Business man / Yakuza / Assistant professor

Dry cleaning shop owner / Lorry driver / Lighting man

Professor / Funayama

Hattori / Pianist

Judge / Yaneura / Comedian

Railway assistant / Takada / Comedian

Right wing / Ishii, the strip theatre owner

Ex-singer / Tome / Stripper

Helen's father