Persona: the Strongest Build Black Hole Form

I accidentally came to the world of Kamen Rider And I became a knight who did not exist in Heisei Kamen Rider, That is Kamen Rider build black hole form, Its strength exceeds that of Mr. K and Galaxy Dragon. Except for the Demon King, no one is his opponent But my goal is to surpass the King of Demons and become the strongest knight This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.