Name: Kiyoshi Kadokura Occupation: Physician (Internal Medicine) Personality: A career man through and through. He trusts Fumi and leaves all household matters to her. However, he is ruthless in his desire to make his children live according to his ideals. In particular, since Eiichi is his future successor, he is adamant about getting him into Imperial University. He listens to Fumi's reports on the children and constantly lectures them. He forces impossible academic demands on his children and makes them complete them by any means necessary. If they do not achieve the future he envisions, he will disown them or give them up for adoption without their consent.

Name: Fumi Kadokura Maiden Name: Kato Occupation: Housewife Personality: On the surface, she is a bright, attentive mother and part of a devoted couple. A beautiful woman who is the envy of her neighbors. Her hidden side is hysterical. She strongly agrees with Kiyoshi's plans for their children's future and is determined to see them through at any cost. She often torments the children outside, laughing under her breath when she makes them fail on purpose. The smirk is fleeting, as she immediately rushes to help them. Since the neighbors only see that part, she maintains a reputation as a good mother. If anything displeases her, she becomes hysterical, resorting to violence and verbal abuse. A few hours later, she will hug them and apologize, saying, "I'm sorry, but it was your fault."

Name: Eiichi Kadokura Occupation: 3rd Year High School Student (Old System) Age: 19 Personality: The firstborn of the family. He feels a heavy sense of responsibility as the eldest son. He is a rough-and-tumble "bankara" student. While enduring the pressure from his parents, he remains a kind older brother to his younger siblings. In reality, he feels he isn't suited to be a doctor and is struggling with internal conflict. With the Imperial University entrance exams only months away, he is feeling cornered. He truly wants to live happily with his siblings. Since his high school is a boarding school, he usually stays in the dorms to relax. However, once he returns home, the lecturing begins, so he often sneaks back just to play with his siblings before leaving again.

Name: Sachiko Kadokura Occupation: 5th Year Girls' High School Student (Old System) Age: 17 Personality: Known as the "Madonna" of her school, she is a peerless beauty who attracts onlookers from other schools. She also has the side of an older sister who has looked after her younger siblings while Eiichi was busy studying. She is exhausted from being forced to be perfect for so long. She wants to get married and leave the house as soon as possible, but her current worry is the lack of suitable marriage prospects.

Name: Yutaka Kadokura Occupation: 2nd Year Middle School Student (Old System) Age: 13 Personality: Bright and mischievous, but a bit of a crybaby. He has recently started worrying about his future. His current concern is whether he can successfully transfer to a good high school. He is working hard because he needs excellent grades to achieve that.

Name: Kimi Kadokura Occupation: 4th Year Elementary School Student (Ordinary System) Age: 9 Personality: Has the typical personality of the youngest child. She plays with everyone at school without discrimination. Very social and active. However, having witnessed the hardships of her older siblings, she is somewhat fearful that the same fate awaits her.