Shin'ya Tsukamoto

Suspecting that his childhood friend, a professional boxer, is having a love affair with his fiancée, a businessman starts training rigorously in order to take him down.

A successful doctor, Yukio's picture perfect life is gradually wrecked, and taken over by his avenging twin brother, who bumps off his family members one by one and reclaims his lover who is now Yukio's wife.