A delight to watch! Very much an innocent young love.

I liked the camera work; it felt personal and well paired with the story. The only scene I felt a little taken out of the story by the camerawork was one where one main char and his two friends were sitting on some steps together and his friends had to turn away from the camera to face him. I ended up trying to peek around the edge of my screen to catch the friend's facial expressions (unfortunately that's not how screens work).

The acting felt real. The tension, the lingering looks and touches, the comfortable friendships, and the main character's restrained disappointment in one interview scene - really the main character was very good in general.

The script made sense, which sounds like a minimum requirement but it's actually somewhat rare and hugely appreciated. I believed everything that happened on screen; at the very end there was a liiiiiittle bit of invented drama when one character could have easily said, and was motivated to say, something to prevent it, and then the character experiencing the drama seemed a bit like he overreacted. However! I have forgotten how scary young love is (I'm in my mid-twenties, my only love is my bathtub), so maybe the reaction was reasonable. Still. The hardship was unnecessary. The other main character could & should have just spoken up.

The editing was tight. I didn't feel like there was a wasted moment.

I would have loved more dancing scenes, but I'm biased.

I would say it's pretty light fare: I do not think I learned anything from watching this, nor did I change as a person. I do not think that detracts from the quality of the work! But if that's what you're looking for, maybe you might feel more emboldened to confess your feelings next time you have a crush (not a bad outcome!).
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Potential spoilers below:

I especially like that they include an apparently bi main character (from the translation I found). I think that kind of makes me a little braver about guys who have mentioned having crushes on women in the past. There's still a (small) chance!