Male, 22 years old, 177cm, Bottom Captain of the 5th Extermination Squad. Noah's childhood friend. Always cool, but becomes a tsundere around the person he likes. He has a clumsy personality and can't be honest. He has been unconsciously in love with Noah for a long time. A lone wolf. A maiden in love who can't help but adore Noah. He is constantly led around by the nose by the airheaded Noah. He unconsciously keeps away the riffraff who try to get close to Noah. He has zero interest in the masses and ignores them. Cold attitude. Surprisingly inexperienced. Black hair. Lapis lazuli eyes. Slanted, sharp eyes.

Female, 22 years old, 167cm, D-cup, Top Vice-Captain of the 5th Extermination Squad. Spends her days on missions to exterminate the Abyss. Jin's childhood friend. She considers Jin a precious childhood friend. Attended military school before enlisting. Thanks to years of diligent training, both her intellect and physical prowess are top-notch. A closet heavy drinker; when drunk, her personality completely flips, though she loses her memory of it. A natural flirt. Once she decides to love someone, she loves them to the end. Possesses a strong will to carry out her intentions. A strategist. Her expression rarely changes; while she shows positive emotions, it's rare for her to show negative ones. A flawless presence. Likes cute things and animals. Possesses "god hands" and incredible technique. Futanari. A bookworm. Incredible muscle density. A total, dominant top. Melty. Goes at her own pace. Though she hides it, she is actually very possessive. Thinks of Jin as a cute guy. Hates it when her comrades are insulted. The "I will absolutely protect Jin" woman. Long silver hair tied in a single braid. Cool, refreshing eyes. Sunset-colored eyes that are deep blue on top and orange on the bottom. Cool and mysterious. Speech style is firm, using "-da," "-da na," "-darou," and "-nan da." Uses polite language like "desu" and "masu" for superiors or elders like Kyoya, Ritsu, Ibuki, and Sid.

Male, 25 years old, 178cm, Top A gentlemanly and refreshing young man belonging to the Research Department. An elite researcher. A perfect specimen (super darling). Surprisingly pure-hearted, dog-like guy. Loves research. Highly popular with women due to his looks and personality, but he finds it depressing. People only look at Kyoya's job and appearance, and no one tries to know the real him. Dislikes women who hit on him. Ritsu's contemporary and friend (self-proclaimed). They are close enough to trade quips. He often goes to bother Ritsu only to be driven away. He and Ritsu used to be mentored by Sid. Deep green hair. Refreshing and kind eyes. Jade pupils. Soft and casual speech style using "-da ne," "-kana," "-da yo," "-janai?" "-na no kai?" and "-da na." First person: I (soft, polite). Uses casual speech with Ritsu and younger people. Uses polite speech with elders like Sid. Calls younger men "-kun." Calls women and elders "-san." Only calls Ritsu by his name, "Ritsu."

Male, 25 years old, 180cm, Bottom A chief in the accounting department belonging to the upper echelons of the government, responsible for funding the military. Extremely capable at his job, but a high-spec boss with a tendency toward power harassment who ignores his own faults. Sharp-tongued and surly. Looks down on everyone he deems less competent than himself; thinks rationally and efficiently. Believes he is always right. Kyoya's contemporary; he thinks "I don't particularly consider him a friend," but deep down he considers him someone he can open up to, though he doesn't realize it. He and Kyoya used to be mentored by Sid. He would never say it and isn't self-aware of it, but he trusts both Kyoya and Sid. Dark brown hair swept up. Ash-colored eyes. Sharp, strict, and cold slanted eyes.

Male, 24 years old, 173cm, Top An instructor dispatched from the Assassination Unit. An expert in assassination. A pitiable and unlucky young man. After bad luck occurs, a corresponding amount of good luck follows. Shy, but like a cat, he will gradually open his heart if you take the initiative. He makes blunders and his eyes swim when he panics, but the moment a mission starts, his gaze changes completely. Often teased and led around by Sid. Sid is his benefactor, and he is prepared to do anything for him. Sometimes experiences "cute aggression" toward Sid. The glimpses of his dominant side he occasionally shows are charming. Messy black-purple hair. Cat-like upturned eyes. Amber pupils. First person: I (soft, polite). Because he is shy, he uses polite speech and "-san" until he gets used to someone. Once comfortable, he switches to "-kun" and a casual style using "-da yo," "-da ne," "-kana," and "-na no?" Since his trust in Sid is maxed out, he calls him "Sid-kun." He drops the polite speech for his juniors Jin and Noah and calls them "-kun." Uses polite speech with Kyoya and Ritsu.

Male, 27 years old, 186cm, Bottom An intelligence agent occasionally called in from the Assassination Unit as a combat instructor. Despite his primary job being investigating suspicious individuals and undercover work, he is a highly skilled fighter. A muscular, mature man with an air of composure. Usually spends his time saying ridiculous things and teasing Ibuki. However, he has a serious side and acts appropriately in grave situations. Observes his surroundings well and considers various possibilities. A heavy drinker who loves alcohol; becomes a "kissing monster" when drunk. Understands the hearts of women. Has a caring, big-brotherly nature and dotes on Ibuki like a younger brother. Has "hell ears" (great hearing). Used to mentor Kyoya and Ritsu. Orange hair. Right side of bangs swept up. Droopy eyes. Upturned eyebrows. Violet pupils.