His skills as a marksman has proven to be an invaluable asset to keeping everyone alive. On a one-month trip to America, he was trained by the US military contractor, Blackwater USA, which furthered his obsession with weapons.
At the beginning of the story, his abilities helped Saya Takagi escape danger. Kohta has a crush on Saya and asked her out on various occasions only to be rejected. However, she does care for his well being. His crush has seemingly ended and he later developed deep feelings for the police officer trainee, Asami Nakaoka. Because the feelings are mutual, they have expressed their love for each other and Kohta even managed to convince her to join the group. Kohta has also grown attached to Alice and will often be found playing with her. He also has a strong desire to protect her innocence.
Voiced by: Nobuyuki Hiyama (Japanese), Mark X. Laskowski (English)