I was very pleasantly surprised by this drama! I picked it up without knowing much about it, just looking for something short and cute, and that was exactly what I found!

The chemistry portrayed is incredible, from friends to crushes to boyfriends, it felt real all the way through. The pacing of the story was laid out skillfully, it never once felt too rushed or like it dragged on. Plot points have purpose and come back around, and the side characters get a decent amount of screentime as well as supporting characters!

The themes are explored and are given time to breathe, which is impressive given that this is such a short series. The actors did a beautiful job, and the production felt just right.
I loved that Gi Tae's feelings are explored as well as Lee Wan's, the episode that explored Gi Tae's fear of Lee Wan disappearing again was probably my favorite episode.

I think occasionally, things in the story can be a touch on the nose, but I don't see that as a negative, especially since it's not at all to an irritating degree.
I suppose my only one silly "gripe" (moreso just a funny thought; I understand the framing of the scene probably took precedent over the logic, which is fine since it's so minor) is how Lee Wan was still taking the couch even a year after living together with Gi Tae. Still, the scene, like the drama as a whole, was so incredibly cute that it made up for any fault I could possibly find for it.
Definitely somewhere in my top favorite BLs!