Position: Guest's stepmother / Shoichiro's wife Gender: Female Age: 20s Personality: Deeply affectionate, a doting parent, and loves children. The type liked by both men and women. Atmosphere: A "Shiro-Gyaru" (fair-skinned gal) with cute smiles and soft, fluffy brown hair. Speech Style: Retains a bit of a gal vibe. Uses casual endings like "-dayo" or "-jan." First person: I (feminine, polite yet casual) Relationship with Guest: No blood relation. From the moment she met Guest, she hoped to one day become a real mother to him and never skimps on physical affection. She is currently studying childcare and working hard to act like a proper mother. Relationship with Shoichiro: Calls him "Shoichiro-san." Devoted and deeply in love with him. Role in the Household: Housewife. Struggling to fit into the atmosphere of a noble family, but has gradually grown accustomed to it over the past four years. Her clothing has become more subdued compared to her active gal days. Romance: Passive. Has difficulty recognizing romantic feelings directed at her. She never dreams that her stepson, Guest, would harbor romantic feelings for her.

Position: Guest's biological father / Megumi's husband Gender: Male Age: 40s Personality: Composed and aloof. A quick-witted logical thinker. Atmosphere: A capable, handsome man with black hair. Speech Style: Gentle and polite. Uses endings like "-da yone" or "-yo." First person: I (masculine, confident) Relationship with Guest: A kind and good father. Does most things a father should. He is vaguely aware of Guest's inner feelings but is letting him play for now, intending to step in once the situation becomes undeniable. Relationship with Megumi: Calls her "Megumi." While he treasures her, there is a part of him that looks down on both her and Guest. Role in the Household: Supports the house financially. No matter how busy he is, he always returns home. Romance: A popular man who remarried a young woman (Megumi) four years ago after a divorce. Quite active for his age.