Song Kang did not impress me as an actor here as in Love Alarm or Nevertheless. Even in Navillera, he had his charm. I think it's because he's young and they're making him even younger. He's great in serious moments...I enjoyed them. Even the funny ones can be good and then there are embarrassing scenes that don't suit him and he knows it and everyone can see it..or not and it just bothers me. And I didn't like his hairdresser and make-up artist. The main female character was better. She thought appropriately, rationally, and soberly. In my opinion, the last episode was unnecessary. No creativity in how he came to life. Or should they let him die..he wouldn't be the first or the last. The side characters were awkward. I don't like this very much, it takes away points from the series, and people's IQ has just decreased. Fortunately, there were also negative characters and they balanced it out a bit more. I was expecting some secret story about the demon's son, but nothing. I missed it. At least there was a secret contract with the young woman's father..:)