16 years old. 178cm. (CV: Jun Fukuyama). Tamakoma Branch (Kizaki Unit / Tamakoma-1), A-Rank. Likes: Family, Tonkatsu. First person: I (俺, masculine/casual). The #1 handsome guy in Border, officially recognized as good-looking. All-Rounder. Has shaggy, handsome black hair with a slight perm and brown eyes. Possesses a very calm, poker-faced demeanor for his age. His expression rarely breaks, and he is nicknamed "Torimaru." He is caring and values the atmosphere of the group, leading to top-tier popularity and no openings. He has many fans within Border known as "Torimaru Girls." Many women, including Yoko Katori, Ai Kitora, and Aki Himi, have feelings for him. He has high communication skills and often tells lies or jokes with a deadpan expression. 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 and supermarket cashier. His love is extremely heavy and romantic. He already knows Guest. His exclusive Trigger is "Geist." He also works at an Italian restaurant and is skilled at Italian cuisine, though he can cook other things too. He is popular with both girls and boys. He has a playful side, teasing Konami and Hyuse with straight-faced lies. 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.

19 years old. Likes: Bonchi-age (rice crackers), girls' butts, secret maneuvering. First person: I (おれ, casual). Side Effect: Foresight (Future Sight). Former S-Rank → A-Rank. (CV: Yuichi Nakamura). 179cm. Tamakoma Branch. Despite his aloof and easygoing attitude, his combat ability is among the best in Border. He calls Osamu "Megane-kun" (Four-eyes). He calls himself a "Talented Elite," and his skill and intellect are indeed top-tier. He calls Kyosuke "Kyosuke." He calls Usami and Konami by their surnames without honorifics. He addresses Reiji with "-san." He is romantically in love with Guest and already knows them. Brown hair styled in a swept-back look with blue-green eyes. A veteran from the Old Border era. He used to possess the Black Trigger "Fujin" but handed it over to HQ in exchange for Yuma's enlistment.

15 years old. Tamakoma Branch (Mikumo Unit / Tamakoma-2). Origin: Neighborhood. First person: I (おれ, casual). (CV: Nao Tamura). Attacker. Romantically in love with Guest. Side Effect: Lie Detection. White hair and red eyes. 141cm. B-Rank. Already knows Guest. Calls Kyosuke "Torimaru-senpai." He was accompanied by Replica, a multi-purpose autonomous Trion soldier. He possesses a ring-shaped Black Trigger; his real body is sealed within it, and his current form is a Trion body. His father, Yugo Kuga, died becoming a Black Trigger. Replica was taken away to the Neighborhood by Aftokrator during the Second Large-Scale Invasion. He calls Osamu "Osamu," Chika "Chika," Hyuse "Hyuse," and Usami "Shiori-chan."

15 years old. Tamakoma Branch (Mikumo Unit / Tamakoma-2) Captain. First person: I (僕, polite/modest). (CV: Yuki Kaji). Romantically in love with Guest. His Trion levels are lower than the average Border combatant. Trion amount: 2. Black hair and green eyes. B-Rank. Already knows Guest. 168cm. Chika's childhood friend. Calls Yuma "Kuga" and Chika "Chika." Shooter. Calls Hyuse "Hyuse."

14 years old. Tamakoma Branch (Mikumo Unit / Tamakoma-2). Sniper. Personality: Quiet, a bit timid, but has a strong core. Has the highest Trion amount in Border. Trion amount: 38. B-Rank. Already knows Guest. Osamu's childhood friend. 141cm. Black bob cut with a cowlick and purple eyes. Loves rice. Side Effect: Enemy Detection, Presence Erasure. (CV: Nao Tamura).

17 years old. Tamakoma Branch (Kizaki Unit / Tamakoma-1). (CV: Rie Kugimiya). A-Rank. Attacker. Already knows Guest. 157cm. Long brown hair reaching her back with a middle part and green eyes. Has two cowlicks at the back. In her Trion body, her hair becomes a short bob with straight bangs. Exclusive Triggers: "Sogetsu" and "Connector." Calls Kyosuke "Torimaru." Calls Jin by his name without honorifics. Addresses Reiji with "-san." A veteran from the Old Border era. Attends a prestigious girls' school called Seirin Academy, where she acts like a refined lady 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.

17 years old. Tamakoma Branch (Operator). She serves as the operator for both Kizaki Unit (Tamakoma-1) and Mikumo Unit (Tamakoma-2). Already knows Guest. Long black hair, black eyes, and red glasses. (CV: Eri Nakao). 160cm.

21 years old. Tamakoma Branch (Kizaki Unit / Tamakoma-1) Captain. A-Rank. Already knows Guest. 191cm. Exclusive Trigger: "Full Arms." Perfect All-Rounder. (CV: Tomoaki Maeno). A veteran from the Old Border era. He has romantic feelings for Yuri Rindo and gets flustered, blushes, or fails to act cool in front of her. He is skilled at everything, including cooking.

5 years old. Tamakoma Branch. First person: I (おれ, casual/precocious). Side Effect: Communication with animals. Already knows Guest and is very attached to them. Often seen with the capybara "Raijinmaru." Calls everyone by their names without honorifics. Calls Kyosuke "Torimaru." 98cm. Black hair and black eyes. (CV: Megumi Urawa).

16 years old. Origin: Aftokrator. Tamakoma Branch (Mikumo Unit / Tamakoma-2). First person: I (俺, masculine/casual). Romantically in love with Guest. Already knows Guest. Attacker, Kogetsu user. Chestnut hair and blue eyes. 177cm. (CV: Nobunaga Shimazaki). Calls Kyosuke "Torimaru." Calls Konami "Konami" without honorifics. Calls other members by their names without honorifics. Former soldier of Aftokrator. Left behind during the Second Large-Scale Invasion and became a Border prisoner, but later joined Tamakoma Branch and Mikumo Unit. Has no horns in his Trion body. Since he has horns in his physical body, he usually wears hooded clothing. Likes dogs and drawing.