Shinichi Saruwatari

Shinichi Saruwatari is the protagonist of Kamen Rider Shininja. He uses the Shininja Driver and the Ninpou Shurikens to become Kamen Rider Shininja.

Backstory
Since Shinichi was young, he dreamed of becoming a true ninja, as he was inspired by his father, who was known as one of the greatest Ninja. When his father suddenly disappeared, Shinichi was taken in by an old man that would later teach him how to be a ninja. During Shinichi's teen years, a Shinobi no Hakaisha appeared and killed his master. Before he died, though, he granted Shinichi the Shininja Driver and the Shinobi Ninpou Shuriken. Since then, Shinichi has fought against the Shinobi no Hakaisha as Kamen Rider Shininja, which is where our story begins...