I really liked this chapter! Glad to see that the ending of last chapter wasn't a resolution in any way at all and Seol-a is still not satisfied.
Min-jeong is my favorite friend in this series. No-rae's are kinda meh compared to her. (Probably due to No-rae herself picking friends that wouldn't get involved with her secret business whereas Seol-a's do.)
Also, single panel at the party? Awesome! Seems to lead straight into next week being AT the party just as others have mentioned.
Hypothetically, if No-rae did kiss Seol-a in the bathroom or something (with no one else around I'm assuming), how would Seol-a react? She's not drunk so she might feel awful ("committing a crime" again), might get carried away and THEN feel awful, or...okay, I am having a hard time not seeing her feeling awful.
I think contrary to people here just not wanting an untainted Seol-a, what bothers me about flashback boy is that Seol-a obviously didn't love him (same with relationships with girls they might not love). I'm not bothered by Sung-pyo because we're led to believe No-rae really cared.