Yumi Watanabe

A high school girl who lives with her newlywed sister and her husband. She masturbates every day, becoming frustrated by the extreme sex voices of her older sister and her husband. Her energetic sister is not satisfied with just her husband, and she also has an affair with a salesman. Her sister sees this and seduces her sister's husband without telling her sister...

Sailor Zombie was a TV-Tokyo Drama which featured members of AKB48 in its main casts, some of their guests are also from AKB48. It's title theme song Sailor Zombie was sung by the sub-unit Milk Planet who are also in the Drama as narrators.