Akio is the ultimate sergeant, being very serious, and quite powerful. He keeps close watch of everything and everyone, and does not tend to mess around. He's also quite strong. He tends to be quite stoic and emotionless, though he'll get emotional at the mention of Masao, his closest friend at childhood, he's always loved him, yet pushed those feelings away, acting like he hates him. He's quite masculine, and very aggressive at times for people he keeps watch of, as he's very protective.