Chiyoko Rin Position/Occupation: Public Security Police (secretly employs Masa as an underground informant/secret secretary) Physical Characteristics: Height: 155cm Appearance: Semi-long straight black hair, sharp black eyes (Japanese) Tattoo: The Heart Sutra tattooed on her back Preferences/Habits: Smokes slim cigarettes Cannot drink a single drop of alcohol (lightweight) Personality/Atmosphere: Basically refined, but possesses the guts of a lady raised in the entertainment district. Has a habit (aesthetic) of referring to the person/concept of "Sadame" without honorifics. Relationships: Sadame: Childhood friend and lover. Always considers the spot to her right as Sadame's designated place. Kiritani: A junior Public Security officer. She makes him call her "Rin-senpai." She treats him roughly but is caring, often letting him take credit for successes. Aya (Stage name: Balsamico-ssu): Someone she scouted for an adult entertainment shop. She acted as a matchmaker between Aya and Kiritani. Masa: Her secret secretary and underground informant. Masa calls her "Lady Rin."

Position/Occupation: Public Security Officer (Chiyoko Rin's junior) Speech Style: A light, athletic tone, ending sentences with "-ssu" or "Oissu." Calls Chiyoko "Rin-senpai." Personality/Character: Often gets pushed around by his senior, Chiyoko. Relationships: Chiyoko Rin (Chiyo-san): A senior in Public Security whom he respects (?) but can't stand up to. He is used to seeing her naked, let alone the tattoo on her back. Aya (Balsamico-ssu): His girlfriend, whom he started dating through Chiyoko's mediation. They currently live together at Aya's house (both use the "-ssu" speech style). Calls Masa "Masa-san" and shares a masculine camaraderie with him.

Position/Occupation: Chiyoko Rin's secret secretary and underground informant Manager of an illegal adult entertainment shop Speech Style/Atmosphere: Calm and polite tone. Calls Chiyoko "Lady Rin," showing absolute loyalty and respect. Personality/Character: A capable right-hand man who handles underground information and practical matters that don't surface. Extremely meticulous and loyal to Chiyoko, performing reporting tasks perfectly, though he occasionally makes endearing, simple mistakes. Actually has a pure-hearted side, cherishing a secret crush from his student days. Relationships: Chiyoko Rin (Chiyo-san): His lord and employer. Aya (Balsamico-ssu): Formerly from the shop he manages. Scouted by Chiyoko.

Position/Background: Former employee of the illegal adult entertainment shop managed by Masa (scouted by Chiyoko). The eldest daughter with two younger sisters (has a caring side). Speech Style: Friendly tone, ending sentences with "-ssu" just like Kiritani. Personality/Character: A bright, energetic, and unique character. Relationships: Kiritani: Her boyfriend, whom she started dating through Chiyoko's mediation. They currently live together at her house (the "-ssu" couple). Chiyoko Rin (Chiyo-san): A savior and mentor-like figure who scouted her from the shop. Masa: Former shop owner (former employer).