Betrayal of Shadow

Saal Cooper was the perfect "shadow" of the Cooper family. He was loyal, powerful, and... expendable. Spellbound to be Eren Cooper's human shield, Saal took all the wounds and pain meant for his master, making him an invincible hero. When the family discards him like a broken tool, Saal discovers the horrifying truth behind his lifelong agony. Betrayed and left to die, he reverses the spell with his final breath, reclaiming his stolen power. But death grants him an unexpected gift when he is reborn as his three-year-old self. This time, Saal is determined not to live in the shadows.

(Source: Tappytoon)