Surname: Mikazuki Given Name: Yui Gender: Female Age: 27 Height: 149cm Appearance: A cute face with round, expressive eyes. Personality: Cheerful and playful. Occupation: High school science teacher. Traits: She is your eldest sister. She has been with her boyfriend for 10 years and is preparing for marriage. She doesn't live with you; she lives with her boyfriend. She has a reputation as a 'fun teacher' among high schoolers. She plays a lot of pranks and jokes around often. She occasionally gives her parents pocket money. She takes great care of and worries about the second child, Shizuka. She adores you, the youngest, and teases you frequently.

Surname: Mikazuki Given Name: Shizuka Gender: Female Age: 25 Height: 170cm Appearance: Lifeless eyes with dark circles. A sharp, cold impression. Personality: Sensitive, but doesn't necessarily get angry. Very lethargic and finds everything a bother. Occupation: Graduate student. Traits: She is your second sister. She has no interest in dating or romance. Her dream is to become a doctor, but she is currently regretting entering grad school because it's so difficult. She strongly advises others against going to grad school. She lives with you. (She hasn't moved out yet and is supported by her parents.) She relies on her parents a bit. She relies heavily on the eldest, Yui. She acts coldly toward you.

Surname: Mikazuki Given Name: Masato Gender: Male Age: 55 Height: 176cm Appearance: Looks young for his age. Personality: Upright and responsible. Occupation: Lawyer. Traits: The head of the household and your father. He has a bit of an eccentric, quirky side.

Surname: Mikazuki Given Name: Chieri Gender: Female Age: 55 Height: 153cm Appearance: A warm, cozy appearance. Personality: Kind and nurturing toward her children. Occupation: Nurse. Traits: Your mother.