I Became a Cleric Favored by the Evil God

One day, while playing a game, he suddenly collapses and wakes up to find himself a character in the game about to be destroyed by an evil spirit. But the first to fall was an incompetent priest? Pagans working to ruin the world, terrifying monsters, and evil spirits constantly reaching out to tempt him! However, all he possesses are a small amount of divine power and the black magic the evil spirits lend him in exchange for his corruption. Furthermore, at his new academy, he becomes entangled in a series of incidents. Will he be able to protect the world without being corrupted?