I, the Supreme Demon Lord, Was Reborn as the Empress Saber?

With ten thousand years of cultivation, I am nicknamed the Supreme Original Demon Lord. As the origin of demons, I failed to become a saint and was turned into a sword by someone in a sneak attack? The original demon king Chen Yifan was stolen and accidentally reborn as his own sword. Because the treasure exploded all over the place, it caused a fight among the powerful men in the mainland... However, the Demon Lord, who is a sword, unexpectedly awakened the devouring system and became the Empress's sword at the beginning. Starting the endless devouring every day actually gradually attracted the Empress' attention... Until the empress holds the sword and enters... As his memory awakens and recovers, Demon Lord Chen Yifan seems to realize that his death seems to be the beginning of a conspiracy...