炎脈の捨て子、母を救う ~無能扱いされた俺の逆襲~

A son with a legendary fire vein is abandoned by his father and his mother imprisoned. He survives, becomes the strongest fire cultivator, and returns twenty years later disguised as a trash. When a demon attacks, he reveals his true power and saves the family that threw him away. They mocked him. Now they kneel.