▲ What is a teaching demon? ▲ I started teaching my skills to strangers with kindness, even though I wasn't asked for it. At first glance, it seems to be seen by good people, but it is often considered by the person who teaches that it is an extra step, and it has become a hot topic on the Internet in recent years. Sakura, who comes to the campsite alone to experience the trendy solo camp for the first time, meets Iizuka, a veteran solo camper. At first, she thought she was a kind person and liked Sakura, but ...

The protagonist has an asshole boss who forces him to work overtime way too much and makes his life so miserable. The result ends up being her wife dumping him. This made him rage badly, and he ends up setting his attention on the younger sister of his boss for proper revenge.