I was really disappointed bcz it didn’t lived up to the hype that was created. the 1st half of the show was really boring and slow and It was hard to understand what is actually the theme of the show What’s the purpose ? Besides the concept of parallel universe nothing else was fascinating as it should have been. .There were soo many supporting characters that made the show more confusing. Time travel event was a lot not explained properly. I didn’t liked the chemistry between the lead characters , The chemistry between Jung tae eul and kang shin jae was more interesting.Also Kang shin jae was better character than lee min ho’s character,bcz it had more story and character development. I feel like supporting characters were more strong and interesting than the leading characters. End was also really boring.so much more could have been but it was just not that interesting.