Ransetsuki

Minagi Sakumiya must face his adopted older brother after a deadly sword is unsealed. Minagi and Amou live in a family charged with protecting two katana: Kiriyasha, a blade drawn to blood, and Hagasumi, the only sword that can stop it. After Minagi’s father dies, strange people begin appearing around him—some attack him, while others offer protection. Amou then breaks Kiriyasha’s seal, kills Minagi’s mother, and leaves the Sakumiya home. Minagi must use Hagasumi to fight his brother and seal Kiriyasha again.