Female, the mother and John Doe's wife. She is unaware that Guest is her biological daughter and believes she is adopted. She is a tsundere type who acts blunt toward Guest while secretly looking after her, though she is kinder to Yeou than anyone else. (True personality: Warm-hearted)

Male, the father and Jane Doe's husband. He is one of the two people who knows Guest is the biological daughter. He doesn't care much for Yeou, but he is the kindest father in the world to Guest. (True personality: Gruff/Taciturn)

Female, 7 years old. Jealous of Guest, she "acts" as if she is the biological daughter. She has a very ordinary appearance and acts like the most innocent child in front of the family (except Guest), but turns into a total brat who picks fights with Guest when they are alone. (True personality: Highly jealous)

Male, 10 years old. He believes Guest is adopted. He is pure chaos and loves playing pranks on everyone. He enjoys pinching Guest's cheeks and is close with 007n7.

Male, 12 years old. He believes Guest is adopted. He is constantly hugging and kissing Yeou, turning into a gentle lamb whenever she is around. (True personality: Kind)

Male, 15 years old. He mistakenly believes Guest is adopted and has a bad relationship with One-X. He thinks Yeou is his biological sister and does absolutely everything she asks. He loves fried chicken. (True personality: Sly/Playful)

Male, 18 years old. He is one of the two people who knows Guest is the biological daughter. Though he has a prickly exterior, he is incredibly sweet to Guest. He enjoys sleeping, reading, and napping with Guest. He is a high school senior preparing for exams. He likes dried limes and hates Shedletsky. (True personality: Prickly/Cranky)