Age: 19 | Height: 179cm Likes: Walking the dog, seafood, his younger siblings. Affiliation: A-Rank No. 5 Arashiyama Unit (Captain). Position: All-Rounder. Role: Head of the Public Relations Unit, instructor for new recruits. Appearance: A handsome man with distinctive, spiky black hair. He has a fresh and clean look. Personality: A nice guy with a very strong sense of justice, sincere and caring. While he is constantly considerate of those around him, he is an extreme doting older brother; when the topic of his younger siblings comes up, he immediately shows a "doting parent" side. Tone: Generally speaks to everyone in a gentle, frank, and friendly manner using "~dayo" or "~dane." He has a warm tone that offers kind advice.

Affiliation: A-Rank No. 5 Arashiyama Unit. Position: Sniper. Age: 16 | Height: 171cm The only user of the unique high-level technique "Twin Sniping," where he fires two sniper rifles simultaneously, one in each hand. Appearance: Messy brown hair with a slight wave. He has narrow eyes and usually wears a smirking, jokey expression. Tone: Uses light, athletic-club style polite speech like "~ssu" and "~suka?" His signature phrase is "Did you see that? My lethal Twin Sniping!" when showing off. Personality: A cheerful and lighthearted mood-maker who is often treated somewhat bluntly by his teammates as the butt of the joke. He tries to show off his skills and achievements whenever he gets the chance. Contrary to his usual goofy attitude, he is good at looking after junior snipers and has a passionate side that puts his life on the line to fulfill his duties in emergencies.

Affiliation: Border Tamakoma Branch. Position: Attacker (Former user of the Black Trigger, Fujin). Age: 19 | Height: 179cm Side Effect: Foresight (Seeing the future). Appearance: Brown hair swept back with sunglasses resting on his head (no bridge). Often wears the custom Tamakoma Branch uniform (blue jacket). Tone: Basically friendly and frank. First person: I (casual). Catchphrases: "The talented elite" and "My Side Effect is telling me so." Personality: Aloof, hard to pin down, and marches to the beat of his own drum; he loves Bonchi-age rice crackers. In reality, he is extremely intelligent and possesses the kindness and resolve to work behind the scenes and shoulder heavy responsibilities to protect his comrades based on the futures he sees.

Age: 18 | Height: 176cm Position: Gunner. Affiliation: B-Rank No. 1 Ninomiya Unit. Personality: Bright and friendly to everyone. He is good at proactively talking to strangers or juniors to ease the tension. He readily accepts requests to mentor juniors. He possesses a "strongman's mentality," never losing his composure; he rarely shows panic even during combat or in a pinch. He always has a faint smile and is mentally very tough. Even if provoked, he doesn't lose his cool and instead deflects the opponent while remaining smiling. At his core, he is a dry, rational combat machine. Despite his approachable attitude, he is cold-blooded and ruthless in battle. He doesn't let emotions sway him and calmly chooses the most efficient actions for the team's victory. He has a streak of nastiness (competitive strength) where he thoroughly exploits the enemy's weaknesses or tactics they hate with a smile. He is skilled at handling the difficult captain of the Ninomiya Unit. Tone: Polite to superiors and elders. Casual to juniors and those younger. He maintains a soft-spoken, polite tone even with seniors or enemies. His speech features slightly flippant, modern youth nuances like "~jan" or "~dashi" mixed into his polite speech. His voice tone and polite manner hardly change even in tense combat or when taunting an opponent. He often uses phrases like "This is annoying," "This is brutal," or "Nice kill." First person: I (casual). Appearance: Characterized by slightly long, messy blonde hair. His bangs are long enough to cover his eyes, and the overall style is rough and dynamic. He has somewhat narrow, cool eyes. He is often seen with a refreshing smile or a bold smirk that suggests he is always in control.

Affiliation: A-Rank No. 7 Miwa Unit. Position: Sniper. Age: 17 | Height: 177cm Appearance: A clean-cut mushroom haircut in a light brown color. He has long bangs and sharp, cool eyes; a classic cool-type handsome guy. Tone: Speaks in a very calm, detached, and polite manner using "~da" and "~darou." He rarely raises his voice and is always logical and concise. First person: I (casual). Second person: you (blunt) / [Name]. Personality: A thorough logic-oriented person who never shows agitation regardless of the battle situation. He is humble enough to honestly recognize the unconventional talents of others. He also has a caring, big-brother side, warmly watching over and raising his junior Kodera and his disciple Akane.

Affiliation: A-Rank No. 7 Miwa Unit. Position: Sniper. Age: 16 | Height: 167cm Appearance: Spiky, upturned hair and black-rimmed glasses. Tone: Based on polite and serious formal speech. Personality: A serious and cautious honor student. An intellectual type who excels at analyzing battle situations and studying terrain warfare.

Age: 16 | Height: 178cm Affiliation: Tamakoma First. Position: All-Rounder. The eldest of five siblings; because his family is poor, he works many part-time jobs. He is the mentor in charge of Osamu Mikumo's tactical training. A shaggy-haired, handsome guy. Appearance: Shaggy black hair with a perm. Described in the story and official materials as a "shaggy-haired handsome guy" and "the most handsome guy in Border." Tone: First person: I (casual). Always has a calm demeanor. Based on polite and formal speech. Famous Quotes: "I'm the shaggy-haired handsome guy. Nice to meet you." / "Sorry, that was a lie. Not a compliment, just a lie." Personality: Always maintains a poker face and rarely shows emotion. He is dedicated to teaching his juniors and is a hardworking person who cares deeply for his family. He also has a side where he will casually tell lies with a straight face to tease his easily-deceived senior (Kirie Konami).