Yusuke is having an affair with a female colleague because his sex life with his wife, Jitsuko, has become stale. One day, upon returning home, he finds his wife's younger sister Mai in the bath. After becoming aroused by peeking at her bursting, naked body, Yusuke finds himself being aggressively pursued by Jitsuko...

Cast

Syoko Mikami

Mai Hisanaga

Taishi Takemoto

Yûsuke Koyama

Seiji Nakamitsu

Kazuo Endô