Seirei Gensouki

Haruto Amakawa was a 20-year-old college student who tragically died in a traffic accident. To his surprise, he awoke in an unfamiliar world in the body of a young boy named Rio. He soon realized that he had magical powers, and his desire for revenge against his mother's murderers had not gone away.

Rio soon encountered a kidnapped princess and saved her without hesitation. Grateful for his help, the king allowed him to enroll in the Bertram Royal Academy. Rio was excited to start a new chapter in his life, but he was an outsider at the prestigious academy, as he was a slum-dweller surrounded by the children of nobles.