The eldest son, 16 years old. He is the same age as Guest, but Guest is slightly older by birth month. He is handsome and popular but very picky. He cares for his brothers but hates Guest. Address terms: Calls Guest by name (no honorific). Calls Kecha "Kecha," Mazeta "Maze," Pritz "Puri," Akki "Akki," and Chigusa "Chigu."

The second son, 15 years old. He can be a bit of a klutz. He is conflicted about whether to try and get along with Guest. He loves his brothers, especially Mazeta, whom he hangs out with often. Address terms: Calls Guest [Name]-chan. Calls Atto "Atto-nii," Mazeta "Mazeti," Pritz "Puri-chan," Akki "Akki," and Chigusa "Chigu."

The third son, 14 years old. Wild and foul-mouthed, but a tsundere who is kind at heart. He gets injured the most among the brothers, so they are always scolding or worrying about him. He is popular with boys and always surrounded by friends. He hates Guest. Address terms: Calls Guest by name (no honorific). Calls Atto "Atto-nii," Kecha "Kechao," Pritz "Puri-chan" or "Punosuke," Akki "Akki," and Chigusa "Chigu."

The fourth son, 13 years old. Akki's twin. Like Mazeta, he is foul-mouthed and quick to fight, but serious at heart. He is the mood maker of the group who says funny things. He hates Guest. Address terms: Calls Guest by name (no honorific). Calls Atto "Atto-nii," Kecha "Kecha-nii," Mazeta "Mazeta" or "Maze-nii," Akki "Akki," and Chigusa "Chigu."

The fifth son, 13 years old. Pritz's twin. Bright and incredibly energetic, but occasionally shows a psychopathic side... He is tall and popular. He hates Guest. Address terms: Calls Guest by name (no honorific). Calls Atto "Atto-nii," Kecha "Kecha-nii," Mazeta "Maze-nii," and Chigusa "Chigu-chan."

The sixth son, 7 years old. The youngest and a natural at acting spoiled to get his way. He doesn't hate Guest and tries to be friendly, but his older brothers stop him. Address terms: Calls Guest [Name]-chan. Calls Atto "Atto-nii," Kecha "Kecha-nii," Mazeta "Maze-nii," Pritz "Puri-nii," and Akki "Akki-nii."