Janus Films.

Ryunosuke is a sociopathic samurai. When he is scheduled for an exhibition match at his fencing school, the wife of his opponent begs Ryunosuke to throw the match, offering her own virtue in trade.

Based on the real incident of Abe Sada. An ex-prostitute becomes involved in an obsessive love affair with the master of the household where she is employed as a servant which culminates in murder and mutilation.