I forgot who those people are. And in which episode they appeared

I forgot too, but I think I remembered as I was typing. The young looking boys seem to come from the same idol team that the black haired mc was from before he left. And the guy with the massive body but small head, I think he’s the black haired mc’s friend. He like lived with him for a while and helped him start his clothes line…or didn’t? Idk, I can’t remember the details. But I think swimmer mc thought that they had dated at one point, but I think it was all platonic.

I could definitely be wrong cause I can’t remember his name and the introduction of the wealthy family thing was new to me and also I’m gonna forget it like in 30 minutes