Kei's arm isn't a power waiting to be unlocked, it's a time bomb disguised as salvation, and the show knows the difference. Every scar tissue conspiracy, every organization closing in, every moment he realizes what the doctors actually did to him when he was five years old feeds a single question that gets uglier the closer you get to the answer. The mystery isn't "what is the arm," it's "what did they turn me into when they saved my life," and by the time you understand, you've stopped trusting anyone claiming to help him.
Kei's childhood accident left him with a reconstructed arm that he's learned to live with. Years later, his limb begins exhibiting impossible abilities, manifesting powers he can't explain or control. He quickly discovers he's not alone. Others like him exist, each harboring their own supernatural gifts embedded in their bodies, and they're all caught in the crosshairs of organizations willing to kill for what they possess. Forced together with fellow powered individuals, Kei must uncover the truth behind his arm's origins while evading relentless pursuers. The mystery deepens as he realizes his power connects to a larger conspiracy, one that threatens far more than just his life. Trust becomes a luxury when everyone around him could be enemy or ally, and his enhanced arm might be the key to either salvation or destruction. Blending high-octane action sequences with genuine paranoia and intrigue, the series follows Kei's desperate fight for answers in a world where his body itself has become both weapon and target. Every transformation brings him closer to the truth, and further from the normal life he once wanted.