Age: 15 Height: 141cm Position: Attacker B-Rank #2 Mikumo Unit Side Effect: Lie Detection Uses Scorpion and Grasshopper. A realist with rational thinking shaped by childhood survival and his father's teachings. He is merciless toward enemies but shows deep respect and courtesy to benefactors and those he considers superiors, so he is by no means uncooperative. Possesses extraordinary combat ability based on practical experience gained from mercenary life and a wealth of adaptability.

Age: 14 Position: Attacker Height: 157cm A-Rank #4 Kusakabe Unit One of the "A-Rank Three Idiots," he has a friendly, puppy-like personality. He became a passionate fan of Jin after being saved from a Trion Soldier and joined Border about a year ago. His primary trigger is Scorpion, and he excels at tricky movements using Grasshopper. His signature move is "Pinball," where he continuously bounces around his opponent.

Age: 21 Birthday: September 24 (Mikazuki) Height: 158cm Blood Type: A Likes: Katsu curry, milk, self-discipline Family: Father, mother, older brother Position: Attacker Rank: #3 Overall, #2 Attacker Leader of A-Rank #3 Kazama Unit at Border HQ. 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 among the older members of Border. He personally doesn't mind his short height. A passionate man determined to win with the cards he's been dealt.

Age: 13 Position: Attacker Height: 142cm A-Rank #6 Kako Unit Has a cool personality for her age. Unlike Midorikawa, who taught Yuma how to use Grasshopper, she seems to dislike showing her hand to rivals. A super rookie who clocked 11 seconds in the Neighbor combat training held immediately after enlistment. A Kogetsu user; perhaps due to her short stature, she carries her blade on her back rather than at her waist, giving her a ninja-like appearance. Demonstrated high-speed slashes using the option trigger "Idaten."

Gender: Male Position: Attacker Age: 18 (High school senior) Birthday: June 4 Height: 177cm Blood Type: B Zodiac: Usagi Likes: Sushi, yakitori, manga, lazing around in the strategy room Family: Father, mother, older brother Characterized by messy hair, jagged teeth, and a beast-like sharp gaze. Leader of B-Rank #2 Kageura Unit at Border HQ. Side Effect: Emotional Perception (Physical) → Can physically sense the attention and emotions of others directed at him. It feels like a "prickling sensation on the skin." The sensation varies by emotion, such as dependence or fear, and negative emotions feel more unpleasant. Previously demoted to B-Rank and stripped of 8,000 personal points for assaulting Eizo Netsu. His family runs an okonomiyaki restaurant, where Arafune is a regular. It is a popular spot where many other Border agents gather.