This is the story of a young slave gladiator in an underground arena. He doesn't know about his past or how he get there, only that his name is Eigil, and that he is strong. One day, he kills the boss and escapes outside, joining a band of mercenaries as

Three years ago, in the land of Reinbulk, a Legendary Hero was summoned in the Kindom of Leezalion and he succeeded in repelling the Demon King. Now, five students are summoned back into Reinbulk by the Kingdom of Luxeria to fight against the Demon King a