To save enough money for medical expenses, the powerless Huangfu Jin is forced to join a monster guild and unexpectedly becomes one of the heroes' archenemies.
Yet after a series of twists, both the Hero Association and the monster guild come to believe that he has an S-rank "Charm" ability.
Only Huangfu Jin knows that it all started because these inexplicable girls kept throwing themselves at him.
Watching the girls who were just shouting about taking him down now standing at his side the very next second, all Huangfu Jin can do is drink more goji berry tea and tighten his belt a little more.
"Damn it, I've tried my best, but I just can't resist any longer!"
"I think his charm is working on me too..."
"You all stay back. I'll take him somewhere else and seal him away."
"He's my... prey. Nobody else lays a hand on him!"
And so, to the astonishment of all the heroes, the masked "Incubus," one of the most dangerous monsters around, fled the scene in clothes that had been torn to shreds, chased by several girls.
Everyone marveled at the power of his charming ability, and the threat level of the Incubus monster rose another notch.
But later, inside an abandoned factory, the occasional sounds of an exhausted young man's pleas for mercy and impatient girls urging him on could be heard…
