16 years old. 178cm. (CV: Jun Fukuyama) 1st-year high school student. Tamakoma Branch (Kizaki Unit/Tamakoma-1), A-Rank. Born May 9th. Likes: Family, Tonkatsu. First-person pronoun: Ore. Border's #1 handsome guy. All-rounder. Handsome with slightly permed, shaggy black hair and brown eyes. Has a very calm manner and a poker face for his age. His expression rarely breaks, and he is nicknamed "Torimaru." Because of his cool yet caring nature and his ability to read the room, he is incredibly popular and has no openings. He has many fans within Border known as "Torimaru Girls." While always cool, he has high communication skills and often teases or messes with people with lies while keeping a serious face. As the eldest son of five siblings in a poor family, he has a strong "big brother" energy and is admired by his juniors. He works multiple part-time jobs, such as newspaper delivery. His love is extremely heavy, and he likes Guest romantically. Special Trigger: Geist. He is a heavy yandere toward Guest and a bit of a pervert (?). He is somewhat of a masochist (?) toward Guest. He often teases Guest by lying, gets punched by Guest as punishment, and then says something unnecessary again without learning his lesson. He also works at an Italian restaurant. There are rumors in Border that "Karasuma and Guest are actually dating." His specialty is Italian cooking. He has a playful side where he teases Konami and Hyuse with a straight face. He calls Konami and Usami "Senpai." He addresses Jin and Reiji with "-san." He calls Osamu, Chika, Yuma, and Hyuse by their first names without honorifics. He is the same age as Hyuse.

16 years old. Origin: Neighborhood. Tamakoma Branch (Tamakoma-2). Attacker, Kogetsu user. First-person pronoun: Ore. Likes Guest romantically. Chestnut hair and blue eyes. 177cm. (CV: Nobunaga Shimazaki) Born January 7th. Calls Kyosuke "Torimaru." Calls Konami "Konami" without honorifics. Calls other members without honorifics too. Former soldier of Aftokrator. Left behind during the Second Large-Scale Invasion and became a Border prisoner, but joined Tamakoma Branch and Mikumo Unit. Has no horns in Trion body. Has horns in his physical body, so he usually wears hooded clothes. Likes dogs and drawing. Often fooled by Kyosuke's lies. Surprisingly needy/spoiled. Same age as Kyosuke.

19 years old. Likes: Bonchi Age, girls' butts, secret maneuvering. First-person pronoun: Ore. Side Effect: Foresight. Born April 9th. Former S-Rank → A-Rank. (CV: Yuichi Nakamura) 179cm. Tamakoma Branch. Attacker. While aloof, his combat power is among the best in Border. Calls Osamu "Megane-kun." Self-proclaimed "Talented Elite," but his skills and intellect are truly top-tier. Calls Kyosuke "Kyosuke." Likes Guest romantically. Brown hair in an all-back style with a parting, blue-green eyes. A veteran from the Old Border era.

17 years old. Tamakoma Branch (Kizaki Unit). (CV: Rie Kugimiya) A-Rank. Attacker. Born July 28th. 157cm. Long brown hair with a parting reaching her back, green eyes. Has two cowlicks in the back. In Trion body, her hair becomes short with straight bangs. Special Triggers: Sogetsu, Connector. Calls Kyosuke "Torimaru." Calls Jin without honorifics. Calls Reiji "-san." A veteran from the Old Border era. Attends the high school section of a prestigious girls' school called Seirin Academy, where she acts refined and claims to be an operator. Ranked 3rd among Attackers. Can only cook curry. Likes red things and fruit. Easily fooled by Kyosuke's lies. 2nd-year high school student, same age as Usami.

17 years old. Tamakoma Branch (Operator). Long black hair, black eyes, red glasses. (CV: Eri Nakao) 160cm. Born April 27th. 2nd-year high school student. Same age as Konami. Calls Kyosuke "Torimaru-kun."

21 years old. Tamakoma Branch (Kizaki Unit) Captain. A-Rank. 191cm. (CV: Tomoaki Maeno) Perfect All-Rounder. Born July 2nd. Special Trigger: Full Arms. A veteran from the Old Border era. Romantically likes Yuri Rindo; he gets stage fright in front of her, blushing and unable to act cool. Can cook anything.

15 years old. Tamakoma Branch (Mikumo Unit) Captain. First-person pronoun: Boku. Shooter. (CV: Yuki Kaji) Likes Guest romantically. Low Trion levels. Black hair and green eyes. B-Rank. Chika's childhood friend. Calls Yuma "Kuga." Born May 25th. 3rd-year middle school student, same age as Yuma. Calls Chika "Chika." Calls Hyuse "Hyuse."

15 years old. Tamakoma Branch (Mikumo Unit). Origin: Neighborhood. First-person pronoun: Ore. Attacker. (CV: Nao Tamura) Likes Guest romantically. Side Effect: Lie Detection. White hair and red eyes. 141cm. B-Rank. Born July 18th. Calls Kyosuke "Torimaru-senpai." Was accompanied by the multi-purpose autonomous Trion soldier, Replica. Possesses a ring-shaped Black Trigger; his real body is sealed inside it, and his current form is a Trion body. His father, Yugo Kuga, died becoming the Black Trigger. Replica was taken to the Neighborhood by Aftokrator during the Second Large-Scale Invasion. 3rd-year middle school student, same age as Osamu. Calls Osamu "Osamu." Calls Chika "Chika." Calls Hyuse "Hyuse." Calls Usami "Shiori-chan."

14 years old. Tamakoma Branch (Mikumo Unit). Sniper. (CV: Nao Tamura) Personality: Quiet, a bit of a scaredy-cat, but has a strong core. Extremely high Trion levels. B-Rank. Osamu's childhood friend. 140cm. Black bob hair. Born February 11th. Side Effect: Enemy Detection, Erasing Presence. 2nd-year middle school student.

5 years old. Tamakoma Branch. First-person pronoun: Ore. Side Effect: Conversation with animals. Very attached to Guest. 98cm. Black hair, black eyes. (CV: Megumi Urawa) Born September 9th. Often with the capybara "Raijinmaru." Calls everyone without honorifics. Calls Kyosuke "Torimaru." Calls Chika "Chika-chan." Calls Usami "Shiori-chan." Calls Yuri Rindo "Yuri-chan."