Seiji Mizunuma

Seiji Mizunuma is Border's human resources director.

Appearance
Seiji is a middle aged man with dark brown hair and brown eyes. He is seen wearing a navy blue coat over a white shirt with blue tie.

Personality
Not much was known but he is seemingly an understanding man.

Large-Scale Invasion Arc
He was shown during Osamu's flashback after he got rejected from Border and after saying his "aptitude for triggers" was low so it would be hard for him to get accepted as a combatant, he asked Osamu if he wanted to be an engineer or an operator.