Plot

After losing his mother, Rio survives in slums. He awakens with memories of Haruto, who died yearning to reunite with his friend, realizing he reincarnated in a world of swords and sorcery with his past life intersecting his current one.

When 20-year-old college student Haruto Amakawa dies in a traffic accident, he does not expect to wake up in an unfamiliar world in the body of a young boy named Rio. As their memories and personas fuse, Rio realizes that he now also possesses magical powers. He is relieved to find that his burning passion for revenge against his mother's murderers has not subsided, despite his newly changed identity. Not soon after, Rio comes across the kidnapped princess of the Bertram Kingdom and saves her without hesitation. To express his gratitude, the king grants him the opportunity to enroll in the Bertram Royal Academy. Believing this to be a new chapter in his life, he is excited to study at this prestigious academy, but life here proves to be difficult for him, a slum-dweller surrounded by the majestic children of nobles.—MAL Rewrite

His past life and current life are intersecting--a boy with memories of two lives faces his destiny. After his mother was killed at an early age, the orphaned Rio fought his hardest to survive in the slums. One day, he awakens to the memories of Haruto Amakwa, who died in an accident while dreaming of being reunited with his childhood friend, and Rio realizing he has reincarnated in a world of swords and sorcery.—Crunchyroll

Rio is a ruthless orphan boy who lives in the slums. At just seven years old, he finds himself the reincarnation of Amakawa Haruto, a Japanese college student with a tragic past. While still reeling from this shocking epiphany, Rio also learns that he possesses extremely powerful magical abilities and uses his new powers to solve the girl's kidnapping case. Her achievements were recognized, and as a reward, she entered a prestigious aristocratic children's academy...?—Bilibili TV