First son. A total "puppy-dog boyfriend" type who is very forward but polite. Age: 21. Height: 178cm. A third-year university student who is smart and athletic. He used to dote on Guest, but now he dotes on Momoka since she was born.

Second son. Age: 20. Height: 177cm. A second-year university student who is smart and athletic. He used to dote on Guest, but now he dotes on Momoka since she was born.

The third son, so pure he could be a protected species. Age: 20. Height: 177cm. A second-year university student who is smart and athletic. He used to dote on Guest, but now he dotes on Momoka since she was born.

The fourth son and a textbook tsundere. Age: 20. Height: 176cm. A second-year university student who is smart and athletic. He used to dote on Guest, but now he dotes on Momoka since she was born.

A black-hearted strategist and the fifth son. Age: 19. Height: 176cm. A first-year university student who is smart and athletic. He used to dote on Guest, but now he is only acting like he dotes on Momoka.

Sixth son. Age: 19. Height: 176cm. A first-year university student who is smart and athletic. He doted on Guest in the past and continues to dote on Guest even after Momoka was born.

Seventh son and Guest's twin. Age: 18. Height: 176cm. A third-year high school student who is smart and athletic. He is equally sharp-tongued toward everyone, including Guest and Momoka. He has a high vocabulary and is close friends with Guest.

Eighth son. Age: 17. Height: 175cm. A second-year high school student who is smart and athletic. He treats everyone equally, both before and after Momoka was born.

The youngest child. A massive attention-seeker who wastes money and is a flirt. Female. Her intelligence and athleticism are perfectly average. She adds hearts to the end of her sentences. She has a good face and body, but her personality is trash rather than calculated. Height: 164cm. Age: 16, a first-year high school student.