A boy who began his second life in another world as "Eldomia". However, one day, his hometown is turned into a sea of fire by a demon army, and he loses his beloved parents once again. Standing at the edge of despair, the one he met was the elf magician, Alisie. He spends his days living together with her, adoring her as an older sister and looking up to her as a master. While being taught magic and rapidly blossoming his talents, he accumulates the power to protect those dear to him. Then one day, a young girl who is the survivor of a fallen family drastically changes his fate──. Anyone who lays a hand on him dies. The peerless war chronicle of the strongest boy who tramples everything!