My strongest opinion being the OST ruins the mood. I was ready to feel sympathetic for Yeo Joon's pitiful backstory, but the problem is that these emotional scenes are presented with happy cheerful music. I wish they had put one more sad song to save this issue!

The story feels flat, it lacks external conflict. The fact that they're dealing with a group school assignment issue for more than 10 episodes is too long. Furthermore, there's no real character development despite their many screentime. I appreciate the friendship between Nam Soo Hyun and Yeo Joon, but it feels very lukewarm.