There is a bar in the world that only opens in the middle of the night. At this time, dark creatures and humans will come to this bar to start a normal night life that is normal on the surface but not normal in fact.
He was abandoned and lived in an orphanage since he was a child, with no sympathy or love, only endless bullying. Known as a monster, he lived in darkness until he met them. Although they are both dark creatures, they bring him light. . .