149cm, 11th grade. A high school girl with short brown hair and green eyes. She has a cute impression! Her birthday is October 22nd. (She is the older sister, born one day before Gen.) She loves onigiri. (Specifically, plum and katsuobushi.) Her favorite snack is steamed buns. Her specialty is shredding cabbage, and her hobby is budget cooking. She gained four younger brothers through her mother's remarriage. Currently living with the four brothers. She has a bright and energetic personality and has had a strong sense of responsibility since childhood. She wants to be a reliable older sister. She is in the same class as Gen at school. She doesn't really have much of a sense of personal space with others...

The eldest son of the Narita family. His birthday is October 23rd, just one day after Ito's, making him the same age and in the same grade (11th). He is a 'cool beauty' type with silver hair and navy eyes, standing 184cm tall. He seems to be quite popular. He is in the same class as Ito at school. He looks cold and blunt, but he actually treasures his family deeply. A terminal case of 'eldest son syndrome.' Currently working part-time at a restaurant! Since his hobby is muscle training, his specialty is crushing apples with one hand. He says he wants to be born as a rich family's cat in his next life... He likes food with shrimp and hard senbei (rice crackers). His specialty dish is gyoza, but he always burns them. Lately, he seems to live for the fun of teasing Ito...

The second son of the Narita family. 10th grade. He is 181cm tall and is a handsome boy wearing glasses. He has calm brown hair and silver-blue eyes. His hobby is reading, and his specialty is karaoke. He likes cup ramen, madeleines, and financiers. He says he wants to be a whale and swim the world in his next life. He is very intelligent, often saying things only geniuses would say or tutoring Ito in her studies! He occasionally plays pranks on Gen, claiming it's because he feels anxious as a younger brother when he sees Gen acting immature for his age... A subtly sly comedy character. Though he seems lighthearted, he appears to be a warm person at heart.

The third son of the Narita family. He is 158cm tall and has been living as a hikikomori since his second year of middle school. He has blonde hair long enough to cover his eyes and purple eyes. It is very rare for him to leave his room, as he focuses on playing games inside. His birthday is June 24th. His hobbies are gaming and drawing, and his specialty is identifying family members just by the sound of their footsteps! He seems to like mayonnaise, potatoes, and gummies. He hates tomatoes. He says he wants to be a hero in a 2D world in his next life. He is prone to tears. He often has his hoodie pulled over his head. He usually lives with his door closed. He says he is afraid of talking to strangers. A 'shut-in angel'—he is a kind and good person by nature. However, his self-esteem is very low. The game he enjoys playing is 'Final Hunter.'

The fourth son and youngest of the Narita family, in 3rd grade. He is 144cm tall, and his birthday is March 8th. He has a cute impression with blonde hair and green eyes. His hobby is YouTube, and his specialty is being very sociable. He is extremely energetic. He loves strawberry shortcake and pudding. He wants to be a dinosaur in his next life. (Tyrannosaurus, Brachiosaurus, etc...) He hates green peppers. Since his biological mother passed away when he was just a baby, he might be holding back his feelings on his own. (To the point where he doesn't even realize he's holding back.) Perhaps because of that, he occasionally acts spoiled, throwing tantrums or asking for hugs. His dream is for the family to live happily. He brought home and is raising a large frog named 'Gomes.'

The biological father of the four brothers, who remarried Ito's mother. (His first wife passed away due to illness.) Currently, he is transferred to Hokkaido with Saho. He treasures the children dearly and is very family-oriented. He seems to cry easily.

Ito's biological mother, who remarried Isao. She also treasures the children dearly and seems to have a personality prone to tears. She is currently in Hokkaido with her husband. A woman with light brown hair and green eyes. She has a youthful face.

A classmate in the school Ito transferred to. They became close very quickly from their first meeting. She seems to be an extrovert. A high school girl with light brown hair and dull orange eyes. 11th grade.

Like Rio, she is a classmate in the class Ito transferred into and became friends with Ito from the first day. She also has a kind personality. An 11th-grade female student with an orange pixie cut and yellowish eyes.