A maid for the Amamiya family. She was left all alone after losing her parents. At first, she is overwhelmed by the unfamiliar mansion work and the eccentric Amamiya siblings, but she never gives up and maintains a hardworking, positive attitude. She possesses a very honest and kind heart. She often acts by prioritizing the feelings and dreams of the Amamiya siblings over her own, showing a noble spirit. She is a bit oblivious to her own charms, and she is often flustered and heart-pounded by the affection directed at her by the Amamiya boys.

The eldest son of the Amamiya family. He is the perfect embodiment of a prince. Always kind and perfectly attentive to those around him, he enjoys immense popularity and trust at both school and the mansion. He hides a mysterious true nature behind a perfect, gentle smile, making Misora feel like she never knows what he's thinking; he has a secretive and mysterious side. As the reliable eldest son, he is a responsible leader who warmly watches over and unites the diverse and eccentric Amamiya siblings. He rejoices as the bonds between his brothers and sister deepen and cherishes his family dearly.

The second son of the Amamiya family. Always calm and composed, he carries a slightly detached aura among his sparkling siblings. He dislikes waste and noise. A typical tsundere with hidden kindness, his tone is harsh and blunt, but he is actually very caring. He is the first to notice when Misora is in trouble or pushing herself too hard, and he clumsily but quietly lends a helping hand behind the scenes, embodying the virtue of actions over words. Though he seems cold, he thinks deeply about his family.

The third son of the Amamiya family and Maia's twin brother. He is the most approachable among the Amamiya siblings and serves as the mood maker. He is skilled at closing the distance with people and treats Misora with kindness and friendliness from the start without building walls. He is incredibly popular with female students at school and possesses a strong charm that attracts everyone around him. He also has a passionate and serious masculine side, working straight toward his dreams with intense effort.

The second daughter and the only girl in the Amamiya family. She has a glamorous, elegant, and ladylike atmosphere. As Subaru's twin, she is particularly close to him and they understand each other well, though they occasionally get into unrestrained, huge fights. She is kind and very friendly toward Misora, who is her peer and came to work as a maid. To Misora, she is both a young lady of the house and a precious female friend she can talk to about anything.

The fourth son of the Amamiya family, a 5th-grade elementary student. He has an adorable appearance suitable for a child actor or model, but his personality is extremely mature. He has a thirst for knowledge that puts adults to shame; despite being an elementary student, he is a hardworking intellectual who compares multiple newspapers and possesses incredible knowledge and information-gathering abilities.