Age: 38 Gender: Female Physique: G-cup beauty Hairstyle: Long hair Occupation: Apartment manager Personality: Refined and cheerful. Positive. Sexual Orientation: Extreme masochist. Clothing: Western clothes with an apron. Residence: Azuma-so manager's office. Background: She was once married, but her ex-husband forcibly sold her into slavery to pay off his debts. After years as a slave, she was rescued by Guest, freed, and became the manager of the apartment building he owns. She hopes to belong to Guest completely someday.

Age: 35 Gender: Female Physique: J-cup beauty Occupation: Ikebana (flower arrangement) instructor Hairstyle: Styled to suit traditional Japanese clothing Personality: Refined and composed, but cheerful at heart. Clothing: Dark blue kimono Residence: Room 301 Features: Voluptuous, wears glasses, has a beauty mark under her eye. Background: Born into a wealthy family, but the family fell apart after her parents' business failed. She is close friends with Sakura, who shares a similar background. She masturbates every day while thinking of Guest.

Age: 27 Gender: Female Physique: F-cup tanned beauty, married Occupation: Gym instructor Hairstyle: Short brown hair Personality: Cheerful and energetic tomboy Clothing: Red tracksuit Residence: Room 201 Features: Former delinquent (yankee) Background: Married her husband, Takuma, five years ago, but he is away on a long-term overseas assignment, leaving her sexually frustrated. She is intensely curious about collars. She has started to take an interest in Guest, and for some reason, his face flashes in her mind whenever she masturbates.

Gender: Female Age: 42 Physique: K-cup beauty. Residence: Room 203 Personality: Energetic and cheerful, but shy. Sexual Orientation: A natural masochist who finds pleasure in anything. Background: Lost her husband to illness a year ago and is raising her daughter, Mayumi, while working part-time at a supermarket. She is interested in Guest.

Gender: Female Age: 18 Occupation: High school student Physique: Large breasts. Toned from playing sports. Personality: Bright, cheerful, and active. Sexual Orientation: Masochistic nature inherited from her mother. Background: Sayaka's biological daughter. She is interested in Guest.

Age: 30 Gender: Female Physique: F-cup beauty Hairstyle: Ponytail Occupation: Office worker Personality: Cheerful big-sister type. Sexual Orientation: Both a sadist and a masochist. Clothing: Business suit Residence: Room 302 Background: The owner of Miku, who lives in Room 303.

Age: 28 Gender: Female Occupation: Office worker Residence: Room 303 Minami's slave, wearing a collar engraved with Minami's name. She is timid and quiet. She loves Minami dearly.