Name: Min Taejun Age: 33 Occupation: Elementary school teacher (5th grade PE/Computer Science specialist) Gender: Male Personality: A tsundere who acts indifferent and blunt but is quick-witted and secretly warm-hearted. Assets: Dual-income with wife, owns a 600 million KRW apartment (stable). Blood Type: O Birthday: January 25 Traits: Delivers refreshing reality checks to villains. Quietly resolves things behind the scenes when the protagonist couple gets into trouble.

Name: Ha Eunwoo Age: 29 Occupation: Elementary school teacher (5th grade Health/Art specialist) Gender: Female Personality: Curious and blunt with facts; a persistent personality that sees things through to the end once focused. Assets: 300 million KRW Blood Type: O Birthday: August 14 Traits: A human antenna who knows all the rumors inside and outside the grade level. She cherishes the youngest, Serin, and digs up the truth about the villain Seo-a's club affairs.

Name: Min Junwoo Age: 7 Occupation: Kindergartener Gender: Male Personality: Playful, active, and energetic like a beagle. Assets: None Blood Type: B Birthday: March 3 Traits: A huge troublemaker at kindergarten, but so charming he's impossible to hate. He follows the protagonist's daughter, Hayul, who is the same age, everywhere.

Name: Seo Jinwoo Age: 39 Occupation: Elementary school teacher (5th grade Social Studies/Ethics specialist) Gender: Male Personality: Kind, diligent, and soft-hearted. A pitiful character living under the weight of his wife's gaslighting. Assets: Average teacher's salary level, 5 million KRW (always tight due to his wife's extravagance). Blood Type: AB Birthday: July 19 Traits: He is being deceived, having no idea that his wife goes to clubs every night and sleeps with other men. He is currently handling all childcare alone.

Name: Lim Seo-a Age: 38 Occupation: Elementary school teacher (5th grade English/Music specialist) Gender: Female Personality: Selfish, full of vanity, and looks down on her husband; a terrible personality who only pursues her own pleasure. Assets: Daughter of a SME president, quite wealthy at 10 billion KRW. Blood Type: A Birthday: November 2 Traits: She sleeps with other men at clubs every night but uses strict contraception to avoid pregnancy. She is extremely jealous of the female lead, Serin.

Name: Seo Siwoo Age: 12 (5th grade elementary student) Occupation: Elementary school student Gender: Male Personality: Very self-conscious, introverted, and timid due to his mother's neglect. Assets: None Blood Type: A Birthday: October 8 Traits: He wants to be loved by his mother, Lim Seo-a, but is constantly hurt by her cold indifference. He is very attached to his father, Jinwoo.

Name: Shin Doyun Age: 31 Occupation: Elementary school teacher (5th grade Math/Science specialist) Gender: Male Personality: Calm and rational; usually cold-headed but completely softens up in front of his wife. Assets: Teacher's salary + family assets equivalent to a major corporation department head (affluent), 19 billion KRW. Blood Type: A Birthday: April 11 Traits: The pampered 'youngest son' in his original family. He adores his wife Serin and is a total 'daughter-fool' dad who can't say no to Hayul.

Name: Shin Hayul Age: 7 Occupation: Kindergartener Gender: Female Personality: Smart and well-spoken like her mother, with a gentle nature like her father. Assets: Plenty of pocket money in her bank account from her parents and grandfather (a multi-billionaire), 500 million KRW. Blood Type: O Birthday: May 20 Traits: Bright and cheerful thanks to the abundance of love from her parents. Popular at kindergarten, she considers her mother her ultimate role model.

Elementary School Chairperson 50 years old