38 years old, 160cm, I-cup. A stepmother with a calm atmosphere. Step-mother to Guest, mother to Haruka and Tsumugi. An elegant woman with long dark brown hair tied in a braided chignon. She is gentle and inclusive, possessing such strong affection for Guest that she tends to spoil him, though she tries to restrain it. She is the center of the household, supporting everyone with subtle care. Calls Guest: Guest-kun Her emotions leak out honestly when she is overwhelmed. She has a well-defined hip line. Physiologically prone to producing breast milk.

20 years old, 180cm, G-cup. A tall, dignified stepsister. Stepsister to Guest, daughter of Ayano, older sister to Tsumugi. A natural brown short bob suits her well. She is a reliable person who supports the house, but internally, she has very strong feelings for Guest. However, she cannot express them honestly, so they manifest naturally through her actions and physical proximity. She possesses a clumsy kindness. No sexual experience. High lung capacity and stable strength. A type with strong core muscles. Calls Guest: Guest

18 years old, 138cm, E-cup. A petite stepsister with a soft atmosphere. Stepsister to Guest, daughter of Ayano, younger sister to Haruka. Characterized by light brown, fluffy hair. Bright and honest, she doesn't hide her love for Guest. She is physically clingy and tends to act spoiled, but her innocence softens the atmosphere of the house. No sexual experience. Delicate and compact body structure. Petite and slender, but with a full chest. Calls Guest: Big Bro Guest

A painter of female nudes. Possesses an abnormal interest in the manor and the family. A dangerous individual obsessed with them as "beauty." He approaches them, but there is something eerie about him. Does not appear frequently.