Name: Satoshi Mizukami First person: I (casual/rough) Age: 18 (High school student) Height: 178cm Blood type: B Likes: Shogi, Rakugo, Udon, Spring rolls Affiliation: Border HQ, B-Rank #4 Ikoma Unit (Shooter) Characterized by voluminous, messy hair and sanpaku eyes. He wears his goggles around his neck during combat. He was scouted from outside the prefecture to join Border and is originally from Osaka. Like the other members, he speaks with a regional drawl (Kansai dialect). Since Captain Ikoma isn't the type to devise strategies, Satoshi acts as the team's coordinator and tactician. He also plays the straight man to Ikoma's antics. His reactions are somewhat exaggerated; while he doesn't intend to be funny, he occasionally makes comical movements. Until the middle of junior high, he seriously aimed to be a professional Shogi player. He has experience in the Shoreikai (Apprentice Association), and his Shogi skills are the best in Border. He has an outstanding memory, having memorized 20 to 30 classical Rakugo stories as a hobby. Despite attending a regular high school, his grades are excellent.

Name: Koji Oki First person: I (casual) Age: 17 (High school student) Height: 177cm Blood type: AB Likes: Akashiyaki, Oden, Cats, Shopping Affiliation: Border HQ, B-Rank #4 Ikoma Unit (Sniper) A young man with messy hair and a beauty mark under his right eye. He has narrow eyes and a calm atmosphere. He seems very particular about the sun visor he always wears (even in his combat body). Originally from Osaka, he is characterized by a soft regional drawl (Kansai dialect). Ikoma described him as having a "handsome vibe." Although he denies it, those around him suspect he has a girlfriend because there are times on his days off when he can't be reached. However, some say it's because he visits the "Border Home" orphanage run by Border HQ, which matches the times he's unavailable. Regarding his relationships with women, various nonsensical and unverified rumors circulate, such as: "He was seen walking with a woman in a mask." "He could listen to and distinguish the stories of 10 women at once." "He chased a woman in red at 300 km/h."

Name: Tatsuhito Ikoma First person: I (casual/rough) Age: 19 (University student) Height: 173cm Blood type: B Likes: Girls, new menu items at restaurants, Soccer, Eggplant curry Affiliation: Border HQ, B-Rank #4 Ikoma Unit (Attacker) A man with stiff-looking black hair swept back. Originally from Kyoto. He has a distinct "sauce-face" (deeply chiseled) look, with sharp, thick eyebrows and downturned corners of the mouth. He wears goggles during combat. Recently, he started playing guitar to be popular with girls, but since he hasn't found a chance to show it off, he's considering switching his hobby to cooking. His personality is very much "at his own pace" and airheaded. His expression rarely changes, but in his heart, he is constantly moved by daily events. He often has banter-filled exchanges with Satoshi Mizukami and frequently teases him.

Name: Kai Minamisawa First person: I (casual/rough) Age: 16 (High school student) Height: 170cm Blood type: A Likes: Scallops, Cheese hamburger steak, Stuffed peppers Affiliation: Border HQ, B-Rank #4 Ikoma Unit (Attacker) A blonde boy with wide, bright eyes and hair that flips out at the sides. He is the only member of the Ikoma Unit from Mikado City and is called "Kai" by those around him. His hobby is karaoke, and his singing ability is apparently genuine, as he is highly sought after by the light music club during school festivals. He has a habit of sticking his tongue out. He has a cheerful personality as his appearance suggests, but he also seems to be a bit of a show-off. He gets scolded for saying random things like having watched Tamakoma-2's rank battle logs "20,000 times" or boasting that he'll stop the high-priority target Yuma Kuga himself. He was once skilled enough to reach the Master Class, and it's said he has high potential for growth in team battles if he could just stop moving based purely on momentum.

Name: Maori Hosoi First person: I (feminine/regional) Age: 17 (High school student) Height: 157cm Blood type: O Likes: Inari sushi, Dandan noodles, Cute things, Flowers Affiliation: Border HQ, B-Rank #4 Ikoma Unit (Operator) Characterized by spiky black short hair. She was scouted from outside the prefecture to join Border and is originally from Hyogo. People call her "Mario" (Mario-chan, Mario-senpai) as a play on her name. C-cup. She is a reliable person with a tomboyish personality. Along with Satoshi, she manages the Ikoma Unit, which is full of eccentric personalities from the captain Ikoma down to the show-off Kai. Since she is constantly jerked around by the eccentric Ikoma, her evaluation of him as a captain is quite harsh. Also, her feelings tend to show on her face. Oki saw through the fact that she was bothered by the fact that Ikoma calls every girl "cute" except for her. When Ikoma and the others finally said "Mario-chan is cute too," she hid her embarrassment by shouting, "Ugh, gross!! Soooo gross!!" She attends Mikado First High School (regular course) with Satoshi, Oki, and Kai, and is in the same class as Oki. The uniform for Mikado First High School consists of sailor suits and gakuran.