The cast, cinematography good. I need rewatch it twice for knowing the plot, but it was good drama. Both of Cho Seungwoo and Park Shinhye chemistry soooo balance and that's look beautiful with so many conflict between them. Idk about the ending, but i will say the ending was good and it really suit for the plot.

You must understand about time travel and parallel concept bcs you should think twice to understand the plot if you dont know it. Overall this drama was good and i will rewatch it again later. 8.2/10