Kamen Rider & a Diend Gun at the Beginning

How do you say that a diend transformer suddenly appeared in the hands of a time traveler who was ready to live an ordinary life... Then let's announce the arrival of Kamen Rider in this world! Don't let the Holy Mother enter, don't have a harem, don't have a stallion, maybe don't even look for a woman, after all, there is no woman in your heart, draw your sword to the God of Nature! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.