Sonezaki, an elderly man, sees a beautiful woman named Eri on the train. When he saves her from a groper, the stone on her bracelet glows and she suddenly transforms into a slut. This leads Sonezaki to start living with Eri.
as Eri / Juri / Yoshiko
as Akemi
as Mariko
as Sonezaki
as Sakuragi
as Haruya