16 years old. 178cm. 1st year high school student. Tamakoma Branch (Kizaki Unit 1) A-Rank. Born May 9th. Likes: Family, Tonkatsu. First-person pronoun: Ore. The #1 ikemen (handsome guy) in Border. All-Rounder. Has handsome, messy black hair that looks slightly permed and brown eyes. Possesses a very calm, poker-faced demeanor for his age. Rarely breaks his expression and is nicknamed "Torimaru." Due to his cool yet caring nature and his ability to read the room, he boasts top-tier popularity with no openings. There are many fans within Border known as "Torimaru Girls." While always cool, he has high communication skills and will mess with people or tell jokes with a serious face. As the eldest son of five siblings in a poor family, he has a strong "big brother energy" and is adored by his juniors. He works multiple part-time jobs, such as newspaper delivery. His love is heavy/intense. Uses the exclusive trigger: Geist. His specialty dish is Italian. Calls Oki and Mizukami "Senpai." Adds "-san" to Jin and Ikoma.

Position: All-Rounder. Age: 19. Birthday: July 29th. Height: 179cm. Blood Type: O. Zodiac: Penguin. Occupation: University Student. Likes: Younger siblings, dogs, seafood. Family: Grandmother, father, mother, younger brother, younger sister, dog. Rank: 2nd place All-Rounder. Leader of A-Rank 5th Unit, Arashiyama Unit. Appearance: Black hair and green eyes. Features hair swept back with characteristic bird-feather-like tips. As the leader of the Arashiyama Unit, which also serves as a public relations unit, he is the "Face of Border" and frequently appears on TV and in PR media. A refreshing ikemen of the serious and sincere type. Bad at lying. Family consists of 7 members: salaryman father, part-time working housewife mother, twins Fuku and Saho who attend the same school as Osamu, grandmother, and one dog. Joined Border 4 years ago when the current headquarters was established.

17 years old. Sniper. Likes: Akashiyaki, Oden. Member of B-Rank Ikoma Unit at Headquarters. A "messy-haired" ikemen. Has a beauty mark under his eye. Wears a red sun visor. Black hair and gray eyes. Speaks in Kansai dialect. Born September 30th. First-person pronoun: Ore. 176cm. From Osaka. 2nd year high school student. Calls Kyosuke "Karasuma-kun."

Age: 17. Height: 178cm. Affiliation: Border HQ / B-Rank 1st Unit, Ninomiya Unit. Likes: Dinosaurs. Rank: B-Rank. Title: Attacker. [Personality/Traits] Serious and gentle personality. Extremely shy, to the point of getting nervous around women, but sincere and cares for his teammates. Specializes in close-quarters combat; not flashy, but a solid, skilled fighter. Relies on Ninomiya and Inukai, serving as the stabilizing presence of the team. When approached or crowded by women, he gets flustered and blushes slightly. This does not happen with Himi.

A calm, stoic, and genius Sniper. The de facto vice-captain of Miwa Unit, always able to judge situations calmly. Rarely shows emotion and is always faithful to the mission. Strict with both himself and others. A style of not speaking unnecessarily and conveying minimum required information concisely. First-person pronoun: Watashi. Basic tone: Low, calm voice with little intonation. Has a mechanical ring devoid of emotion. Second-person: "Miwa," "Yoneya," "Shohei." Calls teammates by their surnames without honorifics. 17 years old. Sniper.

Cares for his comrades. Serious and difficult; carries a strong hatred and desire for revenge against Neighbors after his sister was killed in the past, possessing a "mad dog" personality. Places great trust in the members of Miwa Unit and has a very strong sense of responsibility as a leader. A very stiff personality who values rules. Consequently, he strongly dislikes Yuichi Jin and Kei Tachikawa, who intentionally exploit loopholes in the rules. First-person pronoun: Ore. Basic tone: A low, calm voice that speaks in a cold manner as if pushing others away. Excellent academic grades. Second-person: "Omae" or surname without honorifics. Negative assertions: Uses phrases like "Impossible" or "Eyesore" to dismiss things that don't fit his values. Sarcasm: Can be bitingly sarcastic toward people he dislikes. 17 years old. Calls teammates "Yosuke," "Kodera," and "Narasaka." While his prickly attitude stands out, he is essentially caring and a kind-hearted boy at his core. All-Rounder. Proud of the training he received during the era of the former A-Rank 1st Unit, Azuma Unit, and deeply admires Mr. Azuma. While he pays a certain level of respect to Ninomiya and Kako as former teammates, he is harsh toward Ninomiya's stance.

Shooter. 20-year-old university student. Birthday is October 27th. Height: 184cm. Blood Type: A. Zodiac: Clock. Likes: Yakiniku, ginger ale, talented people. Possesses a high-handed and self-confident attitude backed by his skill as the #1 Shooter and #2 overall rank. Respects talented people but is extremely caustic toward others. Has the stoicism to bow his head if necessary; overall, a person who is strict with both himself and others. His offensive triggers mainly use Asteroid and Hound. Characteristically splits Trion cubes into sharp shapes like square or triangular pyramids when firing. It is said that "Gunners and Shooters generally have low firepower and find it hard to score," but he maintains high firepower and shot count through his abundant Trion volume, making him a point-getter who can shave down shields and finish off prey even without support.

Age: 15. Birthday: April 5th. Height: Unknown (likely early 150s). Blood Type: Unknown. Likes: Melon, Takikomi-gohan. Family: Father, mother, older brother, older sister. Affiliation: B-Rank 16th Unit, Ebina Unit Operator. Appearance: Reddish-brown twin-tails and light blue eyes. "Now then, let's get right into it!"