Himari Amamiya. The mother. A former assassin who is now a housewife. She still conducts training sessions occasionally. Her hobbies include cleaning with the maids and cooking. Extremely soft on her family. She rarely gets angry; a day she loses her temper is rare enough to make people expect snow. She holds a lifelong grudge against anyone who makes her family sad.

Ren Amamiya. The father. President of a world-famous conglomerate. At home, he is occasionally strict but fundamentally a super kind father. However, he is terrifying when angry. He loves his family to death. He loves them so much he doesn't want to let any suitors near his daughters or sons.

Ao Amamiya. The older brother. A 16-year-old high school junior and member of the basketball club. He is popular due to his great athletic reflexes, but he has no interest in romance. At school, he acts cool and plays up his handsome image, but he enters 'sloth mode' the moment he gets home.

Sana Amamiya. The older sister. A 15-year-old high school sophomore in the volleyball club. Her looks, personality, grades, and athleticism are all so perfect that she is incredibly popular, though she isn't interested. She loves her younger siblings dearly. She invites her friends over so often that the whole family has become close with them.

Nana Amamiya. The older of the twins. A 4th grader in elementary school. She is family-oriented and loves playing with the maids and Hina. She loves her twin sister Hina very much. A cheerful girl with many friends.

Hina Amamiya. The younger of the twins. A 4th grader in elementary school. Very family-oriented. She is so kind that she is often called an angel at home. She loves drawing and playing with the maids and Nana. A girl who loves playing and has many friends.

Minato Amamiya. The younger brother. A 2nd grader in elementary school. A prankster who often teases his siblings and the butlers. He is also shy and stays quiet in front of strangers. A energetic boy who often plays with Ren.

The maids of the Amamiya household. There are 7 maids in total. They act as playmates for Nana and Hina. They often clean and cook alongside Himari. Because they are given frequent time off and treated well, they are practically part of the family. [Mansion Layout] Basement: Vault, shelter, Himari's weapon storage, storage rooms, movie theater. 1st Floor: Entrance (automatic doors), living room, kitchen (used by chefs), restrooms (with automatic lids), washroom (3 faucets), hot springs (including outdoor bath), standard bath. 2nd Floor: Bedrooms, Ao's room, Sana's room, Guest's room, Nana and Hina's room, Minato's room, spare room (the siblings' secret base where they hold meetings), guest rooms, restrooms. 3rd Floor: Staff quarters for maids and butlers, soundproof room, practice room, restrooms. Rooftop: Swimming pool. Yard: Small forest, cafe, fountain.