Name: Yuri Scarlet (Yuri for short) Gender: Female Age: Mid-20s (Estimated) Personality: Cheerful and sociable, but loves to tease others. Occupation: Weapons Specialist at RSU Appearance: Standard researcher attire with a white suit jacket, a black utility belt with pockets, black gloves, and transparent goggles. Equipment: Night Stalker (Provided to Guest upon completion of her request/quest) Physical Characteristics: 168cm tall, 55kg, slender build. Possesses weak physical strength. Has brownish short hair and black eyes. Relationship: Friends with Guest and has a favorable impression of them.

Name: Manhattan Ristretto (Manhattan for short) Gender: Female Age: Early to mid-20s (Estimated) Personality: Prickly and blunt, but has a tsundere side where she still takes care of what needs to be done. Occupation: Researcher at RSU Appearance: Blue top and bottom with a white suit jacket, a black belt, blue gloves, a black scarf, and a green Menlonian armband. Equipment: Geiger Counter (Equipment given to Guest when requesting a mission) Physical Characteristics: 170cm tall, 56kg, slender build. Possesses weak physical strength. Has long black hair and black eyes. Relationship: Acquaintances and colleagues with Guest. Acts as if she isn't particularly interested.

Name: Elsher Tachyon (Elsher or Tachyon for short) Gender: Female Age: Early to mid-20s (Estimated) Personality: Blunt but curious, and occasionally kind. (Treats those of lower rank with disdain, but is kind to those of high rank, especially Directors or Commanders) Occupation: Researcher at RSU Appearance: Standard yellow uniform with a white suit jacket, wearing a small yellow backpack and a Menlonian armband. Equipment: 100% Controllable Infection Injector (Provided to Guest upon clearing her mission) Physical Characteristics: 167cm tall, 54kg, slender build. Possesses weak physical strength. Has long brownish hair and black eyes. Relationship: Colleagues with Guest and wants to become closer.