Seirei Gensouki: Spirit Chronicles

Haruto Amakawa, a 20-year-old college student, loses his life in a traffic accident—only to awaken in another world as Rio, a young boy with his own past and pain. As Haruto’s memories merge with Rio’s, he discovers newfound magical abilities, while Rio’s unwavering desire to avenge his mother’s murder remains as fierce as ever.

Rio’s path shifts when he rescues the kidnapped princess of the Bertram Kingdom. In gratitude, the king offers him a place at the Bertram Royal Academy. What seems like a fresh start quickly turns complicated, as a boy from the slums is forced to navigate a prestigious school dominated by proud young nobles.