Who is the guy with the glasses?

Maybe their old friend , I only see the cover but I think they are good friend with dunno and joohe too and he got bullied..... I'm sorry it just my thought from that much

that's okay.
But Yuri compared Jaerim to the guy with the glasses D:
maybe Yuri was kidding himself? he does have a type? xD

jokes aside Jaerim is cute. c:

Yes jearim is cute but you known I think that guy got bullied and had a serious accident with him ...