OHH I JUST GOT IT I THOUGHT U MEANT THE NEW APARTMENT LOL WAIT YA ISNT IT CONFIRMED THAT IT WAS HIM? CUZ HE TALKED THE SAME, WAS SWEATING TOO AND WAS TALKING ABOUT BEING THE SOLE HEIR. OR DID U NOT READ UNTIL THAT CHAP YET
his brother definitely appears in chapter 50/51, but i highly doubt he's the relative of the landlord/the person with the landlord that kicks yuwon out of his apartment in the early chapters (14 iirc?)
Guys I think the dude that was in yuwon's apartment "visiting" with the landlord is the brother, the eyes match