Nine Days of Demon Hunting

An innocent boy from this side of the universe was possessed by a demonic dragon soul and traveled across the stars to a world of cultivation. When he received enlightenment from an expert and refined the Demonic Dragon Soul, he also possessed some of the Demonic Dragon's nature. From then on, as long as he kills, he will have a steady stream of spiritual energy, and as long as he kills, he will be able to continuously improve himself! The road is difficult, in order to become an immortal, hunt down all the demons!