無能と追放され、雷神になりました

After being exiled, Kaelen spends three brutal years in the Wastelands, where two mysterious masters train him to wield the power of thunder and defeat monsters. But when he returns home, he finds his mother tortured by a ruthless count and his former lover married willingly to the count's son. Determined to change his fate, Kaelen enters the Knights' Trial—only to awaken a power that shocks the entire kingdom... and uncover the truth that he is the son of Thor.