This film was a great comedy with just the right amount of violence. Absolutely loved Jang Pan Su in Kim Dong Hyun's body and his character development during the two-hour film.
The one thing I loved the most was Jang Pan Su's relationship with Oh Mi Sun while his soul was in a body of a teenage Kim Dong Hyun. Their relationship didn't come off as illegal or perverted because Mi Sun was a middle-aged woman and Pan Su was in a body of a teenager as she set clear boundaries. However, their conversations were really humorous as she talked about their kid and how he ruined her life and left while she was talking to a teenage boy.
Totally recommend.