Inexplicably, He Became a Kamen Rider

A group of undead tried to use the magic power of the forbidden book to corrode the world, and resurrected the king of the undead at the cost of their lives to achieve the purpose of destroying the world. Ye Fan, a young man who was as seriously ill as Princess Hedram accidentally gained the power of an exorcist and became the Kamen Rider Amolt.