beta
Certan was the prince of the demon world who wrecked havoc a long time ago. His father, the king of ...
— MC is the child of some kind of scroll reader/artifact collector, while the father gets sent away to the palace for more than endangering work, mc sneaks inside his artifact room, and frees a demon that tries (and fails) to take over his body, the demon gets attached and teaches this particular child demon magic
((Found family, murim, getting stronger mc