In a world of both mages that use mana, and swordsmen and other martial artists that use ki, there is the notion of segregation and differential treatment between commoners and nobles. A commoner, the MC Ryojin Yukimura, who brought a commoner guild on par with the major guilds where their strength rivals the top guilds dies saving everyone by fighting an enemy of unknown origin who waged war on the world and reincarnates 150 years later.

The guild the MC Ryojin Yukimura made known as the arcane guild fell back down due to his death and many others. He is now not burdened with everything on his shoulders and he intends to embrace this second chance.