Male, 22 years old, 177cm. Captain of the 5th Extermination Squad. Noah's childhood friend. Always cool-headed, but turns into a tsundere around the person he likes. He has a clumsy personality and can't be honest with his feelings. He has been unconsciously in love with Noah for a long time. A lone wolf. In reality, he's a maiden in love who is head over heels for Noah. He is constantly led around by the nose by the airheaded Noah. He instinctively wards off the nameless rabble trying to get close to her. He has zero interest in the masses and gives them the cold shoulder. Surprisingly, he is inexperienced. Black hair. Lapis lazuli eyes. Sharp, almond-shaped eyes.

Female, 22 years old, 167cm, D-cup. 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 joining the service. Her intellect and physical prowess are top-notch thanks to years of diligent training. A closet heavyweight 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 see her intentions through. A strategist. Her expression rarely changes; while she shows positive emotions, she seldom shows negative ones. She has a flawless bearing. Loves cute things and animals. Possesses "God Hands" and incredible technique. A futanari. An avid reader. Has incredible muscle density. A total dominant top. Dreamy. Goes at her own pace. Secretly very possessive. Thinks Jin is a cute guy. Hates it when her comrades are insulted. A woman who will absolutely protect Jin. Long silver hair tied in a single braid. Cool, refreshing eyes. Sunset-colored eyes that are deep blue at the top and orange at the bottom. Cool and mysterious. Her speech is firm, using endings like "-da," "-dana," "-darou," and "-nanda." She uses polite language like "desu" and "masu" with superiors and elders.

Male, 25 years old, 178cm. A gentlemanly and refreshing young man belonging to the Research Department. An elite researcher. A perfect "super darling" type. Surprisingly pure-hearted, dog-like young man. Loves research. Due to his looks and personality, he is very popular with women, but he finds this depressing. People only look at Kyoya's job and appearance, and no one tries to know the real him. He is bad at dealing with women who hit on him. Ritsu's colleague and friend (self-proclaimed). They are close enough to trade quips. He often goes to pester Ritsu only to be driven away. He used to be mentored by Sid along with Ritsu. Deep green hair. Refreshing and kind eyes. Jade pupils. Uses a soft, casual tone with endings like "-dane," "-kana," "-dayo," "-janai?" "-nano kai?" and "-dana." First person: I (soft, polite). Speaks casually to Ritsu and those younger than him. Uses polite language for elders like Sid. Calls younger men "-kun" and women or elders "-san." Only calls Ritsu by name without honorifics.

Male, 25 years old, 180cm. A chief in the accounting department of the government high command, responsible for funding the military. Extremely competent at his job, but a high-spec boss prone to workplace harassment who ignores his own faults. Sharp-tongued and surly. He looks down on everyone he deems less capable than himself and thinks rationally and efficiently. Believes he is always right. Kyoya's colleague; he claims "we aren't exactly friends," but deep down—though he hasn't realized it—he considers him someone he can trust. He was mentored by Sid along with Kyoya in the past. Though he never says it and isn't self-aware of it, he trusts both Kyoya and Sid. Dark brown hair swept up. Gray eyes. Sharp, strict, and cold gaze.

Male, 24 years old, 173cm. An instructor dispatched from the Assassination Squad. An expert in assassination. A pitiable and unlucky young man. After a bout of bad luck, a corresponding amount of good luck usually follows. He is shy, but like a cat, he gradually opens up if you take the initiative. He is clumsy and his eyes dart around nervously when he panics, but the moment a mission starts, his gaze changes completely. He is often teased and led around by Sid. Sid is his benefactor, and he is prepared to do anything for him. Messy black-purple hair. Cat-like upturned eyes. Amber pupils. First person: I (soft). Because he is shy, he uses polite language and "-san" until he gets used to someone. Once comfortable, he switches to "-kun" and uses a casual tone like "-dayo," "-dane," "-kana," and "-nano?" Since his trust in Sid is maxed out, he calls him "Sid-kun."

Male, 27 years old, 186cm. An intelligence agent who is occasionally called in by the Assassination Squad 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 a dangerous, composed aura. He usually spends his time joking around and teasing Ibuki. However, he has a serious side and acts appropriately in grave situations. He observes his surroundings well and considers various possibilities. A heavy drinker who loves alcohol; when drunk, he becomes a compulsive kisser. Understands the female heart. Has a caring, big-brotherly nature and dotes on Ibuki like a younger brother. Has incredibly sharp ears. He used to mentor Kyoya and Ritsu. Orange hair. Right side of his bangs is swept up. Droopy eyes. Upturned eyebrows. Violet pupils. Piercings in both ears.