Kōji Oki

"No, no, no! I ain't popular at all. For real."

- Kōji Oki when Tatsuhito Ikoma calls him popular

Kōji Oki is a B-rank Sniper and a member of Ikoma Squad.

Appearance
Oki is a light-skinned young man of average build. He has short, messy, wavy black hair parted at the center-front, and blue eyes. He has a mole below his right eye.

Oki's uniform is comprised of a vermillion, white-zipped jacket. A horizontal white line runs across the chest portion roughly at the height of his armpits, whereas on the back it bends into a flat V-shape pointing downwards, with an ornamental button right above the tip. On the right breast, the white line encircles Border's logo, above which is emblazoned the B-rank emblem. Everything above the white line is black in color, including the high collar, which Oki keeps open to reveal an undershirt with a V-neck; the only exception are the vermillion plain button epaulets. The sleeves are also black until roughly halfway through the humerus, after which they turn vermillion, and disappear into Oki's thick gloves about an inch past the elbow. The gloves are black with a gray palm and a thin brown buckle that encircles them near the cuff. The black portion of the sleeves and the collar bear a square motif that suggests padding. The uniform is completed by black pants with front and back pockets, gray-brown boots that reach halfway up Oki's calves, and a reddish-orange sun visor.

Personality
Oki is easygoing and confident. He has a tendency to act in a flirtatious manner with younger girls, complimenting them while saying that he would like them to be his sisters. He denies his popularity with girls and is very secretive about that aspect of his life. Nonetheless, he contested Tōma's statement that he was slow to shoot at Chika in round six because she seemed to be going for a mutual hit, claiming that she was too cute for him to pull the trigger. This and similar protests are widely considered part of a "good guy" façade, and he is in fact willing to shoot, although it is possible that he finds sniping younger girls more distasteful than any other target.

Quotes

 * (To his teammates) "Mario's got a 'He's never said that about me before' look on her face."
 * (To Satoshi Mizukami) "Roger! I'll go savage and shoot her."
 * (When Tatsuhito Ikoma calls him popular) "No, no, no! I ain't popular at all. For real."
 * (To his teammates) "I saw her for a sec. She changes position after every shot. How earnest."
 * (To Tatsuhito Ikoma) "It ain't fair that I gotta fight a little girl! Pullin' the trigger ain't gonna be easy."
 * (About Yūma Kuga surviving his shot) "Really? Just an arm?"
 * (To Chika Amatori) "Oh, I see a kitty. And I see Amatori with the kitty."
 * (To Isami Tōma) "Since I'm an only child, I always thought it'd be great to have a sister like Amatori."
 * (To Akane Hiura) "Yeah, I think I'd have trouble shooting you too."

Trivia

 * "Kōji" (孝二) is composed of 孝 (filial piety, obedience, mourning) and 二 (two), while "Oki" (隠岐) is composed of 隠 (hiding, concealment) and 岐 (high, majestic, fork in road).
 * Like the rest of his teammates (with the exception of Minamisawa), he speaks in.
 * He likes ' (egg dumplings), ', cats, and shopping, and he recently took up table tennis as a hobby.
 * His cat is listed among his family members.
 * "Okki", Ōji's a nickname for Oki, is homophonous with the Italian word for "eyes" ("occhi").
 * The connection is strengthened by his icon, an with Oki's visor cap over it, and a mole to the side. The Eye of Horus is an ancient Egyptian symbol of protection, royal power, and good health.
 * According to the author, who referred to him as "Mr. Visor", Oki is being watched by his teammates for a possible secret girlfriend since there are times when he is unavailable during his days off. Rumors have spread such as "he was walking with a woman wearing a mask", "he's capable of listening to different girls talking to him at the same time", or "he was running after a girl in red at breakneck speed".
 * Oki wearing a visor, was indirectly influenced by Taichi.