Reencarnei Herdeiro Frágil, Mas Sou Arquimago

To save the world, Archmage Xavier sacrifices his soul and is reborn as a frail eight-year-old. His uncles covet the family mine and bully his sister. When her life hangs by a thread, he unleashes his full power, shaking the city. Can the mage who gave up everything protect the family that never knew him?