Naoyuki is Hiro's childhood friend. He acts as Ichiro's informant and assistant after he finds out the true nature of Hiro and help him in his quest to save people and hunt Hiro down, even as far as teaching him the basic of how to control his mechanical body.
He's a big fan of Gantz manga series
Ando is a man with an average height, and long brown hair that covers his forehead.
- He is a big fan of the GANTZ manga series, the manga that was created by the same creator of Inuyashiki
- Kanata Hongo potrays Naoyuki Ando in Anime and the Live Action adaptation of Inuyashiki.