Chronicles of the Cursed Sword

Rey Yan was an orphan with no home, no skills, and no purpose. But when he comes upon the PaSa sword, a cursed blade made from the bones of the demon king, he suddenly finds himself with the power to be a great hero. The sword's creator is the evil Shiyan, the royal vizier who needs the sword to assist him in releasing his ancestor, the demon king.

Note: Because of differences between magazine and tank chapter numbering, the chapter numbers don't match up, but there's nothing missing.