In the original book, if you kiss someone of the opposite sex, you will turn into a dog from 12 noon to 6 am, but in the play, if you kiss someone, you will immediately turn into a dog after 1 minute andStay like this until 6am.In the original book, when he turns into a dog and returns to a human, he has the same clothes and shoes he just changed, but in the show, when he comes back as a human, he is naked.In addition, in order to break the curse, you must kiss the person you kissed again in a private state, but if you cannot kiss the person within 100 days, you must live in the body of a dog for the rest of your life.

In the original work, Han Haena was drunk and accidentally kissed Kim Seo-won. She got home before 12 o'clock and turned into a dog as soon as she arrived. But in the drama, she didn't get home within 1 minute, so she turned into a dog and went to her house..

Han Yuna's childhood sweetheart Song Yuze (who did not appear in the original work) and the Han sisters' uncle appeared.

In the original work, Han Haena used the excuse that she needed Kim Seo-won and Lee Bo-gyun to get along, but in the play, the four of us went to the cinema, but in the play, we went to the escape room cafe.

In the original work, Kim Seo-won's frightened look was photographed on the table in the teacher's office by Yoon Chae-ah and the physical education teacher because of Moon Deok-il. Later, Han Haena asked if it was because of dog hair allergies, but in the play, she asked if it was the sprinkler dripping.

《A Good Day To Be A Dog》Plot introduction:

An unpredictable fantasy romance between a woman with a curse that turns her into a dog when you kiss her, and a man who's afraid of dogs, even though he's the only con man who can break the curse