After a fatal car crash, Youki was reborn in a fantasy realm. Instead of becoming the legendary savior, he emerged as an overpowered demon. He languished in the castle as a low‑rank sentinel while other guardians were busy. One day a Hero party stormed the stronghold, and impulsively he incapacitated them all with a flick of his wrist. He then tended their wounds, offered them a moment of respite, before escorting the battered group back to town, in the village where he spotted a priestess wearing a silver amulet and instantly fell for her.