What I liked: The love triangle was well done, quite heartwarming, and somewhat realistic. Didn't fill me with frustration like the trope often does.

Why is it a 5: I feel this show is somewhat a compilation of all the worst aspects of K-Drama.
It does the weird thing of making you feel like the story is progressing, the characters evolving, and the plotlines thickening. And then, after finishing the episode, you look back and you realize absolutely nothing has happened. The story is stuck in the same mud. The characters are the same depressed ghosts.
The whole show feels completely hollow. I do not believe for a second that this is a real group of friends, they quite simply never seem to be having fun with each other. For the entire first half of the season, the entire friend group is convinced the MC and ML hate each other and the whole atmosphere is decidedly bleak. Yet they act like they're having fun, and continuously force the two characters to make up. They were never friends in the first place, just stop trying so hard - noone is having fun!
The characters are all far too well-behaved. They speak only when spoken to, never interrupting each other. They all have incredible posture, not moving or fidgeting even slightly. They keep to their timelines impeccably and do all their chores. They even volunteer to do many extra chores. And when teased, or pushed to do something against their will, they all just resign to their fate.
And then of course, when they finally get together, they are together for about half an episode. The kissing is fake, the chemistry is non-existent, and the whole show has been for nothing. What a waste of time.