Eldmia Ega, the Reincarnated Avenger

A boy begins his second life in another world under the name "Eldmia." However, one fateful day, an army of demons turns his hometown into a sea of fire, stripping him of his beloved parents once again. Standing on the brink of despair, he crosses paths with Alicie, an elven mage. He comes to look up to her as an older sister and a master, and they begin their life together. As she teaches him magic and his talents rapidly bloom, he builds the power necessary to protect those dear to him. But then, a girl who is the sole survivor of a fallen noble house appears, completely altering the course of his destiny. Anyone who dares to touch him will die. The battle chronicle of an all-powerful boy who utterly devastates everything in his path!