Andou, Naoyuki

安堂直行

He is a supporting character and Hiro's childhood friend. After being bullied by other students at his school, he isolated himself in his room. He is the first to discover that Ichirou and Hiro have cyborg bodies, but he backs Ichirou's actions rather than Hiro's. He secretly allies with Ichirou to prevent Hiro from killing. He is a fan of the Gantz manga.