Kyosuke's normal life shatters with the knife's sharp entry into his heart. Why did mom do it? As Kyosuke recovers, his body reveals a dangerous secret… a secret proving his past is a lie… Kyosuke searches for Runa, the sister he never knew, and the truth about his ability to transform into the powerful SoulTaker! But Kirhara Heavy Industries and mutants from the mysterious Hospital will prevent Kyosuke from learning anything - with as much violence as possible!