Heavenly Demon Reborn!

In a world governed by martial power, Un-Seong is left powerless as his master is savagely beaten to death under false charges of wielding forbidden demonic techniques. Though he fights with everything he has, he falls short of avenging his master and meets his own demise. Yet death is not the end—he reawakens in the body of a child, being groomed as an elite warrior within a demonic sect. Now forced to walk the very path his master was condemned for, Un-Seong must master the demonic arts and seize every shred of strength he can, all to fuel a single, burning purpose: revenge.