Naoyuki Andou

安堂直行, Ando, Chokko
Shishigamis childhood friend and the only person outside of his family he can open up to. His nickname is Chokko. He had become a shutin due to his classmates bullying him because of his pushover personality but teams up with Inuyashiki to stop Shishigami when he goes on a crime spree after obtaining a mechanical body.