Passing Kamen Rider Amazons

Who is the boy who mysteriously appears in the decade world? What are the two belts that accompany him? Why does this young man have no memory except his name "Shangguan Quan", and who are the three figures in his mind? If Kado Yashi's appearance is inevitable, then why does this boy appear? Well, it's time to make a choice! "Your sin is my strength, ah~ah~ah~ah~a~ma~zon!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.