Apocalypse: Turned into a Monster Rider from the Start

“Kamen Rider, surviving the apocalypse, decisive and ruthless” When Ling first wakes up, he is inside an abandoned underground research facility, surrounded by nothing but wreckage. When he climbs back to the surface, he finds a post-apocalyptic world in ruins. Zombies attack, monsters appear one after another, and dark clouds blot out the sun. And he... is no longer human. He has become a monster, a killing machine that can freely switch between human and monster forms. “Why are you called Ling?” “Because I'm Number Zero.” When he understands the meaning of battle and the importance of protecting others, his monstrous body evolves. And he... will ultimately become the apocalyptic world's final knight!