Kamen Rider Progenitor

10 years ago, the Paradox Box was discovered on the planet Mars and brought forth a catastrophe that would forever change the country of Japan. In the years following the Apex tragedy, awakening the Apex but not just the Apex, the Animalia League also awakened. To combat this chaos, the Animalia League trained a boy who's a progenitor to become a Kamen Rider. (OC x Harem)