Seirei Gensouki

After dying, Haruto Amakawa awakens in the body of Rio, a boy growing up in the ghettos of another world. Haruto had been longing to reunite with a childhood friend who disappeared five years earlier; Rio seeks revenge for his mother, who was killed before his eyes when he was five. As their memories and identities merge, Rio decides to make a life in this unfamiliar world, carrying Haruto’s memories and an unknown special power that may help him improve his circumstances. Before he can settle into his new life, Rio becomes involved in the abduction of two princesses of the Bertram Kingdom and rescues them. He is rewarded with a scholarship to the Royal Academy, a school for the rich and powerful. But as a poor orphan among aristocrats, Rio finds that life at the academy is far from easy.