During the final battle against the Demon King, Hero Shion was betrayed by his four beautiful female companions and blown to pieces. But just before his death, the very enemy he was meant to defeat—Demon King Vila—rescued him. Grateful to his savior, Shion decides to abandon humanity and start a peaceful new life in the Demon Kingdom. Meanwhile, the four traitors who thought they had rid themselves of Shion soon face the consequences of their actions. As the truth of their treachery is gradually exposed, their perfect lives begin to crumble… A bittersweet revenge tale where the betrayed hero finds happiness in the arms of his former enemy, while those who wronged him face their well-deserved downfall!