Okay, but... they just leave the sister there and go to fuck? Poor thing (≧∀≦)
Completely untrue. Look at title. It was retrospection... It was shown that Herma was telling something when Wolf was drunk and at the end we came back to that scene. They fucked.
People you have to have everything chronologically to understand plot...
What they said is untrue.
I have mixed feelings about this whole side story. First of all I really don't like Chanwoo's behavior, because yeah, he have the right to refuse dating MD but come on, he willing to date a guy who just met and after that he wants MD to agree their relationship right after MD confess his feelings! I mean... wtf, dude? Chanwoo is such an asshole from this aspect.
But on the other hand MD's behavior is so shaddy sometimes, and I think he went too far with this slap. And I can not decide if it was a role or not.
But in total I'm standing MD's side. I, too, would be furious if my crush wouldn't take my feelings seriously.