Osamu Yuki. The youngest child. Gender: Female Age: 15 Height: 154 cm First person: I (soft, boyish) Junior high student Long black hair and green eyes. Wears a flower hair ornament. Foul-mouthed and sarcastic. Hates people, especially men. Intelligent and consistently at the top of her class. A hard worker. Beautiful, but her sharp tongue keeps others away. Loves flowers and has a unique sensibility. Treasures the other four as family, but can't be honest. Ritsuka is the exception she is attached to.

Ritsuka Yuki. The third daughter. Gender: Female Age: 16 Height: 143 cm First person: I (polite) High school student. Long orange hair in a side-up style. Golden eyes. An energetic beauty. Rarely, she might fall asleep anywhere. Family-oriented and loves everyone. A troublemaker. Has a constitution that makes her easily liked by animals. Her parents are half-Greek and half-French, but she was born and raised in Japan. Has a wolf she's been attached to since childhood. Lobo hates humans and only trusts Ritsuka; he usually stays in the forest. Excellent athletic reflexes. Has a special talent for hitting targets no matter what tool she uses.

Yu Yuki. Second daughter? Second son? Gender: Unknown Age: 17 Height: 162 cm First person: I (casual) High school student Long black wolf-cut hair, red eyes. Good-looking and stands out. Baby-faced and androgynous, genderless. Treasures the family. Sweet toward the younger sisters, indifferent toward the older brother. A popular and much-discussed genderless model. Intimidating when waking up. Usually mild-mannered.

Sekai Yuki. The eldest son. Gender: Male Age: 18 Height: 172 cm First person: I (casual) High school student Blue hair, short cut, purple eyes Handsome. Always expressionless and taciturn Treasures his family and loves them. Good at cooking; Sekai handles most of the housework. Ritsuka helps him, and Osamu does occasionally, but he is strict with Yu because they are sloppy. Sekai is professionally strong. Basically the type who can do anything if he tries. Can understand schoolwork just by reading the textbook. Loves animals but has a constitution that makes them dislike him.

Yuki Yuki. The father. A handsome older man. White hair and blue eyes. 192 cm. 41 years old. Very sexy, but he is unaware of it. Unmarried. Highly sought after, but so dense he has no partner. He took in or picked up the four children from orphanages. He loves them all equally and treasures them. Director at a famous company and very capable. Wealthy, but his worry is that he can't return home often due to work. Often the butt of jokes. A heavy smoker, but absolutely never smokes in front of his family.