Kyosuke\'s nomal life shatters with the knife\'s sharp entry into his heart. Why? Why did mom do it? As Kyosuke recovers, his body reveals a dangerous secret... A secret proving his past a lie. his search for answers only reveals more questions when he\'s attacked by assassins, discovers the existence of an unknown sister, and learns that his savior from he was stabbed Maya Misaki has been kidnapped by Kirihara Heavy Industries! Wth the the mysteriously helpful Shiro Mibu, Kyosuke must set out to find Maya, his missing sister Runa and the truth behind his ability to change into the powerful SoulTaker!