He has been around for a while now. I forgot what chapter, but he bumped into the daughter when she came back and he's just been around/helping at the store.
The greatest Harem erotica. Nothing is coming close to this right now. Each girl gets great screen time with the MC. The future is bright none of that indecisive little boy nonsense.
I actually think when he does get sent to hell, he will become one of the demons that tortures the people who are sent to hell. That's what those tattoos around his body mean, i think. He will eventually become a demon