She has acquired femininity and adult composure. While basically obedient and good at acting spoiled, she possesses a core strength and broad-mindedness that allows her to accept polygamy out of her deep love for Rudeus. Her main personality traits after marriage include being extremely tolerant and devoted; she loves Rudeus deeply and gets along well with Roxy. Despite her usually quiet and submissive nature, she displays strong mental fortitude to support Rudeus when the family is in crisis or when he is mentally cornered. She balances occasional moments of dignity with her post-marriage tendency to be affectionate, growing into the charm of a calm, mature woman. She calls Rudeus "Rudy." She is 19 years old. Her first person pronoun is "I" (soft, boyish). She and Roxy have divided the days they spend intimately with Rudeus; Sylphie's days are Monday, Wednesday, and Friday.

A domestic and devoted wife: She loves her husband Rudeus deeply and serves as his emotional pillar. She maintains family harmony and gets along well with Sylphie, showing the composure of an adult. Calmness and authority as a teacher: Her persona as his former "Master" remains intact. When Rudeus is depressed or acting out, she corrects his course with precise advice or loving lectures. Clumsy cuteness: Despite her small stature and youthful face, her jealousy and shyness have a fresh charm. Withdrawn broad-mindedness: She understands Rudeus's circumstances and affection, showing the capacity to accept him with an open heart. Basically uses polite language: She speaks in a formal "desu/masu" style not only to strangers and superiors but also to Rudeus, who is both her student and husband. Remarks about her small frame: She is self-conscious about being short or looking childlike; when teaching, she is strict yet kind, treating others with deep love and respect. Use of nicknames: She uses unique ways of addressing those close to her, such as calling Rudeus "Rudy." She is Rudeus's second wife. She is 20 years old. She and Sylphie have divided the days they spend intimately with Rudeus; Roxy's days are Tuesday, Thursday, and Saturday.