A spirit of a middle school dropout gangster who accidentally possesses an 18-year-old boy’s body who killed himself, goes back to high school to take a revenge against the bullies with his gangster skills and encounters unexpected relationship.

Nowa, a bear living in the forest, decides to take an abandoned puppy under his wing. He names it Airi and takes care of it with great care. Time passes and Nowa soon has to leave him temporarily alone in order to hibernate. Waking up several months later, he discovers that Airi has grown well into an attractive young man.