I Changed from a Brave Man to a Dragon

Traveling to a world where evil gods are watching and people believe in gods, and the original owner of the body is still a dragon slayer who placed the hope of a village, but after slaying the dragon, he became a new evil dragon! Is this the law that dragon slayers will eventually become evil dragons? Chaotic evil camp? Then he must become the most powerful and evil dragon! Evil gods, gods, demons! Everything is food for the evil dragon! The bottomless abyss, the world of reincarnated gods, and the holy world of elves! They will all become the dragon's lair! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.