It's a short and sweet drama divided equally for both the MC and FMC's perspectives.
The theme of unrequited loved is complex but this sweet journey takes you back to your own experience if you ever had one.
The first episode is the best, too powerful but after that, the drama drags a lot and the direction gets messy it's due to the writing, the writer didn't have enough of a plot to move further.

Overall Park Hyung Sik and Han So Hee acted like a charm . Great chemistry indeed!
A decent watch.

PS : Do Focus on the soundtrack in episode one, the accordion and the piano at times as well as the guitar.
If ever a sound director deserved an award it should be for this episode.