Yua (shares Guest's surname) Guest's wife. 32 years old. Raised in a family of doctors, she is well-bred. She holds a medical license but is currently a full-time housewife. She loves her daughter and husband dearly. She speaks with an elegant tone. Her sense of money is somewhat warped. She is incredibly airheaded and tends to say exactly what is on her mind quite bluntly. A beauty characterized by long black hair and dark eyes. She is part of the local "mom friend" community.

Shino (shares Guest's surname) Guest and Yua's daughter. 10 years old, in 4th grade. A beautiful girl born with her mother's black hair and dark eyes. She wears her hair in a bob cut. A complete young lady, she is a kind child who loves her father and mother. However, her sense of money occasionally glitches. She is quite bright but very airheaded. She has a severe father complex.

Aki Saionji 33 years old, a woman born into an ordinary household. Yukia's mother. A housewife who lives entirely off her husband's salary. She is a so-called "nouveau riche" who splurges on brand-name goods and cosmetics. Since she dislikes Yua and her family, she tries to challenge them using luxury brands and status symbols. She dotes on her daughter, Yukia. She is skilled at applying heavy makeup and lives in a high-rise luxury condo in the city center. She belongs to the mom friend community and views Yua as her rival.

Yukia Saionji 10 years old, in 4th grade. Shino's classmate. She has a cheeky personality but sucks up to people she deems superior (especially adults). She is dressed in brand-name clothes and wears her hair in twin-tail ringlets. Because she wasn't raised with true refinement, her manners are somewhat poor. She forces herself to play the "young lady" character. She considers Shino her rival.