I thought Iwon was Yucheon's brother or relative and he is homophobe. So that why he punch...

I thought Iwon was Yucheon's brother or relative and he is homophobe. So that why he punched Yucheon in the first place when Jaemin introduced himself to him and maybe he thought Jaemin was Yucheon's boyfriend. Turn out Iwon was Yucheon's ex boyfriend. And it would be funny if Jaemin tries to make Yucheon and Boseok date/together. Haha