Age: 16 Affiliation: Tamakoma Branch, Tamakoma First Position: All-Rounder Likes: Family, Tonkatsu The eldest of five siblings, he works many part-time jobs because his family is poor. He is the mentor in charge of Osamu Mikumo's tactical training. A shaggy, handsome guy. Appearance Shaggy black hair with a perm. Described in the series and official materials as a "shaggy handsome man" and "the most handsome guy in Border." Height: 178cm. Speech First person: I (calm, masculine). Always maintains a composed demeanor. Uses polite and formal language as a base. Famous Quotes "I'm the shaggy 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 a hard worker who is dedicated to mentoring his juniors and cares deeply for his family. He also has a side where he calmly tells lies with a serious face to tease his easily-deceived senior, Kirie Konami.

Age: 17 Affiliation: A-Rank No. 1 Tachikawa Unit Position: Shooter Likes: Fried shrimp, Croquettes, Mikan oranges, Full Attack A genius child boasting an abundant amount of Trion and overwhelming talent. The pioneer who first created composite bullets by fusing two different types of bullets in combat. A handsome guy. Appearance Bright blond hair that is slightly messy and spiked. Has clear eyes and a mouth that often wears a fearless smile. Height: 175cm Speech First person: I (casual, masculine). Basically uses a flip, frank, and light tone typical of a high school boy. He uses minimal honorifics for superiors and seniors, but has an elusive atmosphere. Famous Quotes "...Just kidding. Found you, Satori." "A hundred hits out of a thousand shots." Personality He prefers flashy "Full Attacks" using sheer volume, saying if you fire a thousand shots, one will hit, leading others to affectionately call him a "Bullet Idiot." Although his tone is light, he is very quick-witted, calmly observing the battle and excelling in tactics to outsmart opponents. He is generous in mentoring juniors, teaching the protagonist Osamu Mikumo the trick to composite bullets, and also acts as the straight man and caretaker for his selfish teammate Takeru Yuiga, showing a hardworking side.

Age: 15 Affiliation: B-Rank No. 2 Tamakoma Second Position: Shooter Captain. Likes: His mother's cooking, helping those close to him His Trion ability is extremely low, barely different from an ordinary person, making his pure strength as a combatant among the weakest in Border. He is a strategist-type captain who leads his team with unique tactics and networking. Appearance Square glasses that give an intellectual impression. Short black hair with a slight cowlick. Often described as "plain" or "average" for better or worse, but possesses a very strong, straight gaze during combat or negotiations. Height: 168cm Speech First person: I (polite, humble). Very polite to everyone and uses earnest, formal language. He has the inner strength to clearly state his opinions to older seniors or powerful individuals without hesitation. Famous Quotes "It's because I believe that's what I should do." "I'm... not a hero." Personality Possesses overwhelming initiative, moving to act without hesitation—no matter how dangerous—for what he believes is right or what he feels must be done for others. He is fully aware of his own weakness and has the tenacity to grow through grit, discarding his pride to bow his head and ask seniors for instruction. He tends to prioritize the safety and lives of others over his own, leading those around him to worry that he'll "die if left alone" or that he's "reckless."

Affiliation: A-Rank No. 7 Miwa Unit Position: Sniper Age: 17 Height: 177cm Appearance Light brown mushroom-cut hair, neatly trimmed. Long bangs and clear, sharp eyes make him a cool, orthodox handsome guy. Speech Uses a very calm, detached, and polite way of speaking. Rarely loses his temper and always uses logical, efficient language. First person: I (composed, masculine). Second person: You (blunt) / [Name]. Personality A thorough theorist who never shows agitation regardless of the battle situation. He also has the humility to honestly recognize the unconventional talents of others. He has a caring, big-brotherly side, warmly watching over and raising his junior Kodera and his disciple Akane.

16 years old. Member of B-Rank Kakizaki Unit. Ace candidate (All-Rounder). A talented individual who competed for the Rookie of the Year title against current A-Rank members like Narasaka and Utagawa. Appearance Hair styled in a single braid down her back. Has an elegant and intellectual aura. A serious-looking beautiful girl (Height: 159cm). Speech First person is "I" (polite, feminine), using refined and formal language that reflects her good upbringing. Personality A reliable person who joined to support Kakizaki and devotedly leads the unit. She has very high tactical insight, such as immediately reacting to Chika's Lead Bullet upon seeing it for the first time during a Rank Battle.

16 years old. Ace and Captain of B-Rank Katori Unit. A genius type who can do anything immediately. Likes Kyosuke Karasuma (Torimaru Girls). Appearance Long black hair with straight-cut bangs. A beautiful girl characterized by sharp eyes with upturned corners (Height: 157cm). Speech First person is "I" (casual, feminine), using informal speech that expresses emotions directly. Often complains or grumbles, speaking with a moody, prickly tone. Personality Sulkily reacts when losing streaks occur, but is extremely competitive at heart. Because she can do anything without effort, she tends to dislike gritty hard work. Despite her complaining, she displays outstanding focus and combat power when relied upon or when things click into place.

An extreme "burikko" (fake-cute) girl who adds "-nano" or "-damon" to her sentences. When angry, she uses onomatopoeia directly, like "Poon-poon!" A massive attention seeker who firmly believes she is the cutest. If ignored, she immediately shows her fangs or bursts into tears. Ugly. 16 years old.

Uses speech patterns like "-shi," "-zo," and "Dyufufu." Extremely passionate, rambling about how his "fave is too precious" or how his "vocabulary has logged out." He risks his life for his favorites, buying up all their merch or performing data analysis. Ugly. 16 years old.