morita kazuaki, chiba ryuunosuke, ansatsu kyoushitsu, official art, 1boy, aiming, aiming at viewer, anime coloring, black hair, black necktie, black shoes, closed mouth, collared shirt, full body, grey jacket, grey pants, gun, hair over eyes, holding, holding gun, holding weapon, jacket, kunugigaoka middle school uniform, male focus, necktie, pants, school uniform, shirt, shoes, simple background, solo, standing, tachi-e, transparent background, weapon, white shirt