If this is "The End" of the side stories, this can just mean that he went back to Seol, told his family he wants to quit to become a Hot Pot cooker with his hooker, and they slapped him so hard he went to the demon universe.
If this is "The End" of the side stories, this can just mean that he went back to Seol, told his family he wants to quit to become a Hot Pot cooker with his hooker, and they slapped him so hard he went to the demon universe.