I liked it but it wasn't my favorite

The story was interesting and the actors were great. The drama could've been few episodes shorter. The main plot was good but I feel like there were too much going on. Such unnecessary subplots like the cameraman and Hong Daeyoung's connection to Jihoon's brother. They really didn't go anywhere nor did they bring anything essential to the drama.

I'd be lying if I said that I wasn't disappointed to the ending. The ending was way too predictable, which made the last episodes a little boring. Also the last episodes were too cliché, which is why I ended up skipping through the last episode. I was really ready to throw hands when Daeyoung transformed into his old self. Of course I get that the story is about Daeyoung regretting his life choices, living his 18-year old life again and then realizing how happy his "real" life actually was and in the end regretting becoming 18 again.

Overall a good drama. Interesting story, not too cliché, except for the ending. The actors were great for their roles. Especially Dohyun nailed his role as Daeyoung. He really made the character very realistic, natural and believable. I personally would've liked a little different execution, which is why I'm probably not going to rewatch. At least anytime soon.