Gunnar Gunnarsson was just your average friendly local demon serving his term as the President of Gavalon. Just a normal guy living a normal life in this perfectly normal fantasy world. His life, however, got turned upside down and inside out with the introduction of Makoto Kirigiri to his life.

Makoto Kirigiri was just an average high school delinquent with nothing to live for. A strange mishap causes him to land in this fantasy world with a demon looming over him in disgust. He thinks this is the demon lord that the God of Isekai has tasked him with defeating.

Makoto couldn't be further from the truth.

Gunnar now has to survive the chaotic plans that Makoto springs in order to "defeat" him while also preventing himself from going insane.