Shigurui: Death Frenzy

The Kogan instructors discuss Irako's past in a merchant family and Fujiki temporarily disappears from the dojo after Irako is made heir. At one of his secret meetings with Lady Iku at the Totomi Inn, Irako says he can no longer see her. In a flashback, Irako's mother is seen prostituting herself, even while pregnant. When she finally gives birth, she is six months overdue. Irako arrives crawling from the day he was born and prone to violence at a young age. Meanwhile Master Kogan becomes suspicious of his mistress Iku's conduct and slices off a nipple as punishment. Later, Irako is summoned to the Kontake Shrine on Akiba Mountain, the place where Master Kogan first awoke to the Nagare Boshi technique, and is promised instruction in the Shooting Star Technique. (Source: Wikipedia)