I watched this drama while it was currently airing. I can't tell you how frustrating it was to wait each week to figure out what would happen! But then again, this probably isn't the right drama for someone to marathon the episodes back to back in. The synopsis sounds interesting, huh? Being able to go back and fix things with your first love sounds amazing, doesn't it? As expected, this drama is definitely heart-wrenching. From the very first episode, it was really emotional. Throughout the drama, the moments only got more emotional. If you love sad dramas, then you'll definitely love this one. A lot of the music they used was from Korean indie bands. One specifically was J.Rabbit. The music definitely fit with the emotional parts of the song and J.Rabbit's voice is the cutest and prettiest sounding voice I've heard in a while. I'd definitely recommend this drama if you're looking for a romantic, tear-jerking drama.