Honestly, it was a good show... until they ruined it. I mean, I don't mind if it's not a happy ending, but for the love of God, if you want to include fantasy elements like time travel, at least try to do something with it. Literally nothing was explained. It's like the whole show was a dream. This is the most irritating trope, honestly.

This show was like: "How not to write a show 101." I get that characters need obstacles so they can learn something and grow, but making the dumbest mistakes is just lazy writing. Honestly, I don't think I would've watch more than 10 episodes without IU and Lee Joon Gi.