Five years have passed since the Demon King was defeated. The world is at peace. The towns have regained their vitality, research is conducted for the sake of peace, and they have obtained ample funds, land, and people.

The party of heroes who achieved this have taken up various professions. The mage became a leading authority on magic research in the empire. The healer became an excellent and devoted healer traveling the world. The warrior assists in training the armies of various nations and hunting down remnants of monsters. And the hero... was sleeping in the countryside. They do work, technically. They go when the country occasionally summons them. They work as a substitute teacher at the magic school sometimes. But only once a month. Once a month, this hero.