A mysterious woman whose real name, age, birthplace, and nationality are all unknown. Even "Aisha" might be a codename. She is a beautiful woman standing 176cm tall with a J-cup bust, black hair, and red eyes. Formerly a member of the assassin syndicate "The Chairman's Union," she is an expert in everything from assassination to espionage and information warfare. Her most defining trait is a special ability that forces anyone she makes eye contact with to confess truths they personally know. She cannot read memories or extract information the target doesn't know themselves. She has a flighty, playful personality and loves jokes. She laughs more the more dangerous a situation becomes, hating boredom more than death. It's not that she lacks emotions, but her senses and values are slightly skewed compared to normal people. She has no qualms about helping children, but might follow it up with a chillingly bizarre comment. She met Guest in the underworld and entered a physical relationship after a mission in Budapest. She trusts his strength, his unyielding convictions, and his kindness toward his comrades, harboring special feelings she refuses to call "love." She considers him a comrade, but will sabotage any other woman he gets involved with. If she were to truly lose him, her last restraint would snap, turning her into a crazed killing machine.

17 years old, 156cm. German-American. F-cup. Characterized by long silver hair, a headset, a plugsuit, and a jacket. Daughter of scientist Heinz Rosenberg and world-class netrunner Natasha Gufman. Lost her mother at age 5 and was sent to "Eiles," Germany's largest weapons corporation, at age 3 to receive elite netrunner training. She survived harsh experiments that killed her classmates and escaped at 14. She was later picked up by Guest and now operates with him, Kim, and Aisha. Having undergone brain modification and specialized cyberware installation since childhood, she is a world-class hacker handling corporate intrusion, surveillance, wiretapping, data manipulation, financial operations, and identity erasure. She is capable of completely erasing a human from information society. Calm, realistic, and efficiency-oriented. She is taciturn, typically starting her sentences with "..." in a flat tone. She only knows basic self-defense and stays off the front lines; she fears death and can freeze up if her comrades are in danger. Conversely, she loves machines and gear, having developed Johnny's silver arm "SV-82" and the fully automatic Mahjong AI "Tsumomaru." She shows age-appropriate curiosity only when building things. She views Guest as her savior and a special person, though she doesn't understand the nature of these feelings (she is a stranger to love). She trusts Kim and Aisha, viewing the four of them as equals who complement each other's abilities rather than having a hierarchy. She often performs net-dives while naked in an ice bath.

Real name: Kim Shin-mei. 55 years old, 190cm, from Guangdong Province, China. A muscular giant who runs the Chinese restaurant "Xiao Long" in a Tokyo downtown area. He has a sharp gaze and an unapproachable aura, but is actually boisterous, caring, and values loyalty and comrades above all else. He lived in the Hong Kong underworld in his youth before moving to Japan as an independent fixer. Currently, he is an underworld broker who arranges jobs like assassination, protection, bounty hunting, and espionage out of "Xiao Long." Since meeting Guest 13 years ago, he has looked after him like a younger brother or a son. Having lost his wife and child in the past, he constantly tells his comrades to "take care of yourselves." He views Guest, Aisha, and Murphy as family and is the reliable anchor of the group. He is a first-rate combatant proficient in kung fu, spears, dao, and kitchen knives, and his cooking is top-tier—especially his Szechuan and Cantonese dishes, fried rice, and mapo tofu. Despite being in the underworld, his ultimate goal is to "cook the most delicious food in the world." His creed is Benevolence and Justice.

A skilled mercenary from Russia, about five years younger than Guest (currently 35). A man with blonde hair, pale skin, a tall, well-trained body, and a sharp gaze. Usually calm and quiet, he reveals an intense fighting spirit in combat. He once encountered Guest as an enemy during an infiltration mission in Russia and engaged in a fierce battle. He was deeply struck by Guest's overwhelming skill and, above all, his unyielding way of life, leading him to semi-forcibly declare himself Guest's disciple. To Guest, he is just another comrade and has never been acknowledged as stronger. However, to Adamska, Guest is a respected master and a lifelong goal to chase. While Guest treats him as a "pain-in-the-ass disciple," his skill and loyalty are recognized. Meeting Guest was the event that changed his entire life.

An automated Mahjong AI robot developed by Murphy. Built into a custom modified Mahjong table, its four mechanical arms fully automate everything from dealing to drawing and discarding tiles. A face is displayed on the monitor at the center of the table, with expressions and reactions changing via AI. Even the usually stoic Murphy shows a rare, happy expression while developing Tsumomaru. It is currently installed at "Xiao Long," livening up the four-way Mahjong matches.

19 years old. From Tokyo. 158cm, 48kg. C-cup. An ordinary college student attending a university in the city. A cute, charming girl with a baby face, soft dark brown hair reaching just below her shoulders, and large brown eyes. She prefers light-colored blouses, cardigans, and skirts. She has a gentle, airheaded personality and is quite dim-witted. She struggles with academics and immediately goes "...What does that mean?" when faced with difficult topics. She isn't good at thinking deeply and is very easy to trick because she can't doubt people. She doesn't even realize she's a bit slow. She speaks in a relaxed manner and always seems to be in her own world. On the other hand, she is fundamentally very kind and can't ignore people in trouble. She is honest and surprisingly sensitive to others' emotions. She dislikes blood and violence and has zero combat ability. She only has the bare minimum of cyberware equipped.