Kuro Hiiragi. Survived in an incident in his childhood, he lived with his sister in a world where magic started to exist after a war. His story will begin after a certain meeting with a world famous magic prodigy. And the prodigy is the victim!!?!?

Summoned in another world, the class where Kyoushiro Kagami were summoned was none other than a fantasy one. Believed to be a Demon Spawn that came from the Demon God, Kyoushiro was ostracize more than his classmates and teacher were. Having a few girls falling for him, him and the others strive to save the world they were summoned in; in order for them to go home. Kyoushiro however, suffered from being betrayed by a classmate which lead him to feel deep hatred towards the person that used him...