Tsuda is a young insurance salesman whose life, and the life of his fiancée Hizuru, is turned upside down when he meets an old schoolfriend, Takuji. Soon after Takuji's visit to Tsuda's apartment, Hizuru has her nipples pierced and starts making moves on Takuji while Tsuda begins a fitness and boxing campaign. The bizarre love triangle is linked to a half-forgotten incident from Tsuda and Takujis' youth.

Tsuda is a young insurance salesman whose life, and the life of his fiancée Hizuru, is turned upside down when he meets an old schoolfriend, Takuji. Soon after Takuji's visit to Tsuda's apartment, Hizuru has her nipples pierced and starts making moves on Takuji while Tsuda begins a fitness and boxing campaign. The bizarre love triangle is linked to a half-forgotten incident from Tsuda and Takujis' youth.