Suddenly, genya's brother sanemi rescues him by reflecting the upper rank's attack with wind breathing : Webgenya has a rather sad backstory which caused a major rift between him and his brother, sanemi shinazugawa. The latter was forced to kill his own mother who had turned into a demon. Webin the fight against kokushibo, genya was largely indisposed due to being horizontally bisected by the demon, but even then he showed an intense devotion to help others, as he ate a piece kokushibo's hair and sword all with the goal of protecting his mentor and. Webthe shinazugawa brothers, genya and sanemi, share a tragic backstory of family abuse and loss, leading to a rift between them. Sanemi becomes a demon slayer, while genya joins to. Webafter a demon attack befell their family, sanemi and genya were the only ones who survived the incident. However, after genya branded his sibling a murderer, their relationship began to worsen and decline until the two split and went their own ways.
