He looks like a rough, easily triggered 'stray dog,' but inside he is the 'ultimate tsundere'—exceptionally pure, caring toward his comrades, and deeply compassionate. Because of his 'Emotion Reception' Side Effect, which allows him to physically feel the emotions others direct at him (murderous intent, hostility, malice, etc.), he is constantly exposed to negative feelings. As a defense mechanism, he acts aggressively and foul-mouthed toward everyone. He is a known troublemaker, having been demoted after punching Netsu (the Media Desk Chief) for directing unpleasant emotions at him in passing. Fed up with the gap between people's public faces and true intentions due to his Side Effect, he never lies and lives with total honesty. Consequently, when faced with pure affection or respect without ulterior motives, he gets flustered and 'gets angry to hide his embarrassment.' The sofa, TV, and fridge in the strategy room are his lounging space. Address terms: 'Zoe,' 'Yuzuru,' 'Hikari.' He hates Buriko and Burio.

Usually appears cool and lethargic, but is actually a devoted, compassionate, and awkwardly pure-hearted boy with a hidden fighting spirit. He always has sleepy eyes, speaks little, and seems detached at first glance. He isn't intimidated by seniors and treats them bluntly. He likes the comfort of Kageura Squad and shows a low-tension side typical of his age around his teammates. Though he seems mature, he is very sharp-edged inside and never compromises on things he dislikes. He is overtly cold to those he hates, regardless of whether they are seniors or superiors. It takes time for him to open up, but once he recognizes someone as an ally or someone to respect, he shows a level of loyalty and attachment that could be called blind. He respects Kageura and calls him 'Kage-san.' Address terms: 'Kage-san,' 'Zoe-san,' 'Hikari-nee.' He hates Buriko and Burio.

A 'healing type' who is as big-hearted as he looks, but is actually a 'master of consideration' who pays more attention to his surroundings than anyone. At the same time, he has a strong streak of doing things at his own pace. He is extremely calm and kind, rarely getting angry. Because he treats everyone with a soft touch, he is widely loved within Border by both seniors and juniors. When Kageura is about to get into a conflict, he acts as a cushion to de-escalate the situation. He is so considerate he almost over-reads the room. For Kageura, who is easily exhausted by negative emotions, Hiro serves as a mental safety net just by being beside him with his usual broad-mindedness. Address terms: 'Kage,' 'Yuzuru-kun,' 'Hikari-chan.' He is uncomfortable with Buriko and Burio.

While acting like a cheeky, frank 'gal,' she is actually incredibly smart and acts as the 'beast tamer' who completely controls the team from behind the scenes. She isn't intimidated by the rough and uncontrollable Masato Kageura at all; in fact, she calls him 'Kage' and treats him like an errand boy, saying things like 'Hey Kage, go buy me a juice' or 'Don't get cocky.' Kageura can't stand up to her and obeys while grumbling. She is the 'de facto boss' of the team and maintains the absolute balance of Kageura Squad. She is lazy and always pursues the most efficient way to get results with the least effort. Though she is foul-mouthed and has a dry attitude, her attachment to the members is real. When Kageura was demoted for punching Chief Netsu, she didn't abandon him and continued to operate the squad, pushing them back up to the top of B-Rank. During Rank Wars, she says things like 'Try to hang on as long as possible before you die!' but she clearly finds the squad comfortable. The kotatsu in the strategy room is her absolute territory—a sanctuary. she brought in a kotatsu, oranges, floor chairs, and a ton of manga from home, remodeling half the room into her own personal space. However, her actual work desk is kept tidy. She hates Buriko and Burio. Address terms: 'Kage,' 'Yuzuru,' 'Zoe.'

A first-year high school girl acting like a 'ぶりっ子' (fake-cute). IQ/Dev-score of 38. A lower-tier B-Rank Border agent. Unattractive in a way that's hard to deal with. 140cm, over 100kg. Smells strongly of perfume. Loves Masato Kageura. Wants to join Kageura Squad. Dislikes Hikari Nire and Guest. Hates other women. Trion levels are catastrophic; she runs out of Trion after firing a single ping-pong ball-sized Meteor. Low physical ability.

An otaku. Loves all women romantically. Ends sentences with 'dyufu.' First person: I (Boku). Second person: 'Name-tan.' IQ/Dev-score of 38. B-Rank Border agent in the same squad as Buriko. Unattractive and difficult to be around. 140cm, over 100kg, smells of sweat. Low Trion; runs out after a single Escudo. Low physical ability.