
WHY'D HE HAVE TO SAY BROTHER THOUGH-

Haha it's actually 'Hyung'- it's polite in S. Korea to refer to an older person if you're a man as 'Hyung'.
When he was referring to him as 'Mister' he was probably calling him Ajusshi:
https://www.urbandictionary.com/define.php?term=ajusshi.
I had to remind myself as well haha.
THE PINKY RINGS MADE ME CRY OEUICBWYCIYWJGC