I think in this timeline they’re cousins or something idfk Patito
I think he's a half brother - older, but not technically in the family... I don't know the circumstances behind his birth, but I remember that they are brothers (I was happy that he couldn't go crazy king on taehyuk lol)
Why does the poster in the stalker’s room says ‘yooshin group’s eldest son Taehyuk’, Doesn’t he have a hyung?