Born as a dog, who drugged a man into a dog?

According to the plot of the movie Born as a Dog, the hero Yasunari Kawabata was drugged by his wife and grandmother at a strange divination ceremony for various reasons, which led him to become a lovely puppy while sleeping. The film mainly tells the story of Kawabata Yasunari's interaction and exploration with the human world as a dog, and finally finds his own human identity. This film not only provides some humorous and warm moments for the audience, but also discusses the importance of humanity, affection and friendship.