The New Era: Have the Knights All Turned into Villains?

{A story-focused, action-packed take on a Kamen Rider "What If"} After transmigrating to a whole new Kamen Rider world, he enjoyed crushing weak monsters and living a life of luxury. Then one day, dimensional rifts appeared, and what poured through them were... rather unusual Kamen Rider villains, along with heroic Riders who had turned into bosses? As he lay on the brink of death, something possessed him. Was this a System that had arrived too late? But... why was it a demon with a mind of its own?!