Just Living Through Mythology

Bryce was cursed with an evil power in his old world, originally meant to become a pawn in a multi-versal war. However, he got lucky enough where he was granted relative freedom from such burdens. Now, his main goals in life are to live happily and protect his sister. By whatever means necessary, though she just had to be a demigod. OP MC, Semi-SI, & AU. M for gore and freedom.