Slutty Goldfish Princess: Falling in Love with the Sea (2000)

Sinopsis

An erotic fantasy story in which actress Yoko Satomi plays the role of a mysterious slutty housekeeper. Koji, a dull office worker, buys unsold goldfish and returns home, but his wife Emi runs away from home after a petty quarrel. There is an awkward atmosphere with his daughter Yukiko, who is a ronin student, but the situation changes when Izumi, who is a housekeeper, tutor and an experience-based sex counselor, shows up. An intense sexual experience is on the horizon, full of lust, love and forbidden desires.