As a war rages on between a machine-based empire and a magic-focused empire, a witch and a soldier meet and fall in love. Will their romance bring an end to their nations' conflict?

Red was once a member of the Hero's party, a powerful group destined to save the world from the evil forces of Taraxon, the Raging Demon Lord. That is, until one of his comrades kicked him out.

After his father was killed in an accident and his sister was injured, Shun Tokinoya works at an esports cafe. While the cafe is in debt, he and his friends hope to win the "Xaxerion Championship" in order to repay their debts.