Scum to God, Take One Spark

"Ellin, the son of the thunder god Thor,the legendary divine son who can save the world, was originally nothing more than a “worthless waste” picked up by his adoptive mother—completely devoid of magic and bullied by everyone. To save his dying adoptive mother, he risks his life at sea, only to be framed by Captain Sher. Worse still, the tyrant Severn kidnaps his sister Lina and intended to sacrifice her to death in the race to select elite knights for the Son. To save the family, Elin enters t