Kamen Rider Shinigami (Rewrite)

Takumi is a Grimm-a monster possessing the body of a deceased human. He used to be widely feared by mortals, but after regaining his soul and encountering a sentient belt known as Shiko, he became a Kamen Rider. Now, he fights his fellow Grimm in order to protect humanity and right his past wrongs. Atone your sins, Himura Takumi! Tatakai, Kamen Rider Shinigami!