This kdrama was sooo good. Everything was perfect from the music, casting, acting, story to ending. I have read a few theories about the ending that I loved, for ex. that the guy from present and the women from the past have the same soul, he is a reincornation of her, and the women neesed help from her future self, cuz she was strugleing. Thats how the kdrama now has a happy ending. The ml from the past still loved her, both od them, cuz thsy are the same person, sharing the same soul. This kdrama was a 10/10 for me. I loveeed ittt.