The content of the story was really interesting from the usual drama I watch. I like it the idea they add the theme of alien and amnesia in a romance story. Also, the main characters have an incredible chemistry in this story which I really like it . It makes me being into the story as I watch the drama. Furthermore, the background music is so beautiful to listen, especially it's one of the main character that sing it :). He has an incredible voice of singing. His song 爱所当然 I listen over and over again as I feel so relaxed to listen to a gentle voice. I will recommend to people to watch it.