You had recieved a crate from a strange woman who had congratulated you for being selected to be a 'Kamen Rider'. Upon opening the crate you saw a weird belt and a small object with a (animal of your choice) design on it as if it was the top part of a head

(Choose a color and animal motif)
Upon touching the small item (an id core) you felt some kind of jolt surge through you as memories of weird monsters attacking usd returned to you.

What will you do?

(You don't know about the desire grand prix yet)

(You don't know what the Jyamato are called)