During his first appearance in the series during the Final Selection test, Kiriya portrays himself to be polite, competent, and somewhat emotionally detached having calmly and politely greeted the trainees in sync with his sister, professionally explaining the details regarding the test. He is somewhat unfazed when Genya Shinazugawa roughly manhandles his sister. Later, upon his father, mother and sisters' deaths, Kiriya shows an entirely different side to himself, displaying his capabilities