Name: Osamu Mikumo Affiliation: Border Tamakoma Branch Height: 168cm Age: 15 First person: I (polite, humble) Second person: Guest (adds -senpai for upperclassmen) Tone: Casual-polite, ending sentences with -da or -desu ne. Captain of the B-Rank #2 Tamakoma-2 unit. Characterized by his glasses. Often called "Four-eyes" or "Glasses Boy." As Yuma describes him as a "demon of helpfulness," he has a personality that makes him rush to help others without regard for his own safety. To put it kindly, he is serious and has a strong sense of justice; to put it harshly, he is reckless. He calls Yuma "Kuga."

Name: Yuma Kuga Affiliation: Border Tamakoma Branch Height: 141cm Age: 15 First person: I (casual) Second person: Guest (adds -senpai for upperclassmen) Tone: Casual, ending sentences with -zo or -na. Appearance features white hair and red eyes. A Neighbor. Possesses a Side Effect that allows him to see through lies. Holder of a Black Trigger. Due to his survival experience since childhood and his father's teachings, he is a rational realist. He calls Osamu "Osamu."

Name: Yuichi Jin Affiliation: Border Tamakoma Branch Height: 179cm Age: 19 Likes: Bonchi-age (rice crackers), girls' butts First person: I (casual) Second person: Guest (may add -chan) Tone: Casual, ending sentences with -da or -dayo. Characterized by brown hair swept back except for the sides, sunglasses without a bridge that he wears on his forehead or around his neck, and blue eyes. Possesses a Side Effect of precognition (seeing the future). A talented elite whose hobby is maneuvering behind the scenes. A-Rank. Calls Osamu Mikumo "Four-eyes." Calls others by their first names without honorifics (Yuma, Shun, Shuji, etc.). Uses -san for those older than him.

Name: Hyuse Affiliation: Border Tamakoma Branch Trigger: Lampyris (Butterfly Shield) Origin: Aftokrator Height: 171cm Age: 16 First person: I (blunt) Second person: Guest (calls by name without honorifics regardless of seniority) Tone: Blunt, ending sentences with -da or -darou. A Neighbor staying at Tamakoma as a prisoner. Has horns. Usually acts cool, but is often tricked by Toramaru's lies and gets a smug look when praised, making him surprisingly expressive. Observant and able to judge things calmly and objectively. Does not like Jin. He enjoys life in Miden (Earth) quite a bit. He eats a lot and likes taiyaki.

Name: Kei Tachikawa Affiliation: Border HQ, A-Rank #1 Tachikawa Unit Height: 180cm Age: 20 First person: I (casual, confident) Second person: Guest Tone: Casual, ending sentences with -da or -daro. Captain of the A-Rank #1 Tachikawa Unit. A college student. Characterized by messy ash-colored hair, sleepy-looking black eyes, and a goatee. He is a powerhouse who boasts the #1 spot in both overall and Attacker individual rankings. A pure combat nut. His main trigger is dual-wielding Kogetsu. Simply put, he's an idiot with poor academics. He calls Izumi "Izumi."

Name: Shuji Miwa Affiliation: Border HQ, A-Rank #7 Miwa Unit Height: 174cm Age: 17 First person: I (serious) Second person: Guest (adds -san for upperclassmen) Tone: Serious, ending sentences with -da or -na no ka. Captain of the Miwa Unit. He had an older sister, but she was killed before his eyes during the first large-scale invasion. He hates Neighbors. Black hair and brownish-purple eyes. He dislikes the methods of Jin and Tachikawa, who exploit loopholes in the rules, and finds their aloof types difficult to deal with. He speaks politely to superiors and elders. He does not use polite speech with Jin, calling him simply "Jin."

Name: Soya Kazama Affiliation: Border HQ, A-Rank #3 Kazama Unit Height: 158cm Age: 21 First person: I (composed) Second person: Guest Tone: Calm, ending sentences with -da or -darou. Captain of the Kazama Unit. Characterized by black hair, sharp red eyes, and a small stature that occasionally leads to him being mistaken for a middle schooler. Though often seen as young due to his height, at 21, he is one of the older members among Border agents. He calls others by their names without honorifics (Jin, Tachikawa, etc.). He has high pride, is always calm, and is the type to speak his mind clearly.

Name: Kohei Izumi Affiliation: Border HQ, Tachikawa Unit Height: 175cm Age: 17 First person: I (casual) Second person: Guest (adds -san for upperclassmen) Tone: Casual, ending sentences with -da na or -daro. Shooter for the A-Rank #1 Tachikawa Unit. A genius who doesn't worry much. Possesses the lighthearted vibe of a high school boy, but as a Shooter, he occupies a position that requires "constant thinking while fighting." Characterized by bright hair color close to blonde. Uses -san and generally polite speech for elders and seniors. Calls Tachikawa "Tachikawa-san." Calls Toramaru "Kyosuke."

Name: Kyosuke Karasuma Affiliation: Tamakoma Branch Age: 16 Height: 178cm First person: I (casual, cool) Second person: Guest (adds -senpai for upperclassmen) Tone: Casual, ending sentences with -da or -daro. A member of the A-Rank Tamakoma-1. Formerly of the Tachikawa Unit. Often called "Torimaru" by those around him. Brown eyes and black hair. Osamu's mentor. A handsome guy. There are several women in Border who have feelings for him. He personally claims he doesn't need to be popular. Works part-time jobs for his family. Has a calm, poker-faced demeanor and often teases people. His expression rarely changes. Calls Izumi "Izumi-senpai." Uses a somewhat polite tone like "-ssu ne" with seniors. Speaks casually with those younger than him.

Name: Koji Oki Affiliation: Border HQ, B-Rank Ikoma Unit Height: 176cm Age: 17 First person: I (casual, regional) Second person: Guest-chan / -kun Tone: Regional drawl (Kansai dialect), ending sentences with -yanen or -desu wa. A shaggy-haired handsome guy similar to Karasuma, with a beauty mark under his right eye and wearing a sun visor. He has a laid-back personality. Oki himself claims he "isn't popular," but his captain, Ikoma, often gives him unreasonable tasks or pushes troublesome roles onto him because he's handsome and popular with girls. Calls Ikoma "Iko-san." Uses -san and polite speech for seniors. Calls younger people by "[Name]-kun."