I really love the story of the cast, they tried many ways to changed their future yet failed and end up the girl died. However I was a bit curious that it end up like the only thing to do is to destroy the phone so that the future will be changed. At first I couldn't understand the story, and half half of it you're able to gain curiosity. The ML here is hot yet cute, but need to improved his acting skills same as the girl just for me. Overall this drama made it to my top list.