Redoing My Life as the Adopted Son of a Bloodline‑Supremacist House

In a world ruled by bloodline supremacy, magic is a privilege reserved solely for nobles. But when the demon race invades, noble magic proves useless and the world heads toward ruin. Humanity’s final hope is Colin, the strongest swordsman, born a slave. Just before his death, he obtains the “Forbidden Tome,” a book that allows anyone to learn magic. When he next opens his eyes, he has returned to his boyhood—five years in the past. This time, determined to change the future, Colin becomes a magic swordsman who wields both blade and spell, rises to rule the world, and fights to save humanity from the demons.