Kamen Rider: Beginning in the Ultra-Ancient Era

At first, Chuan Yuan thought he had transmigrated to prehistoric times. Then the Gurongi began hunting his tribe. Then his body was left in tatters after he tried to use an undeveloped Arcle belt, and only then did Chuan Yuan realize something was wrong. This freaking world was Kamen Rider Kuuga! Help! I can still hang on a little longer! Riku: “To protect my sister’s future, I’ll carry on Teacher Chuan Yuan’s will and seal away the entire Gurongi tribe!” Godai: “To protect people’s smiles, I have to choose to fight! Senior Chuan Yuan, watch me transform!” Chuan Yuan: “Someone save me first! I can still be saved!” [Important note] He’ll also travel back and forth to other Kamen Rider worlds, mainly Kuuga and Agit, with a focus on the Heisei-era Rider stories. The protagonist has a cheat, but he isn’t invincible; this is a story of growth.