There Was a Cute Girl in the Hero's Party, So I Tried Confessing to Her

Youki died in a traffic accident and found himself reborn in a fantasy world. But instead of becoming the legendary hero, he was reincarnated as an overpowered demon. Uninterested in becoming the Demon Lord, he idly spends his days as a low-ranking guardian in the Demon Lord's castle. When the Hero's party storms the castle, he casually defeats them all on a whim. After healing their wounds and preparing to send them back to town, he locks eyes with the party's priestess and instantly falls in love.