Youki died in a traffic accident and was reborn in a fantasy world! However, instead of being the hero of legends, he ended up reincarnating into an overpowered demon. Having no desires to become the Demon Lord, he sits around in the Demon Lord's castle as a random low rank guardian. One day, the Hero's party comes to attack and on a whim he knocks out the entire hero party. Healing up the Hero party and then preparing to send them back to town, he notices the female priest and falls in love at first sight!--------A boy, Youki, is reincarnated as a demon mini-boss in a fantasy world, but when the Hero Party comes to kill the Demon Lord, he falls in love with the cute cleric Cecilia. This love at first sight causes a problem as he is no longer a human, but part of the demon enemy she was sent to defeat. What on Earth will happen when he tries confessing to her?