Did he literally not hear her brother say "my sister"😭😭😭 oh boy we are working wi...

I think in Korea like some younger guys call older women “noona” (which is older sister), even though they’re not related it’s a familiarity thing

Ohhhh right i forgot that, thanks for correcting! still he was very impulsive here

Well, it was understandable. Not saying he's right, but that's his personality. We've always known he was hotheaded, plus, jealousy plays a HUGE factor. Lmaooo