Jeon Yeo Been is an amazing actress, the switch between Min Ju and Ju Hee is amazing so much so that I was able to recognize which character she was just by her eyes. Ahn Hyo Seop was good especially in Episode 11.
overall story is meh, but the characters are good ( sometimes). The first 2 episodes are snoozefest, it gets better in the middle but starts going down when they start explaining their time travel mechanics, as there are numerous plot holes and a bunch of unnecessary stuff. Still the ending message was good alingwith the final plot twist.
Ok watch. Don't really recommend it. Watch it if you're a fan of Jeon Yeo Been.