The eldest son! High school senior. Personality: Kind, reliable, a motherly figure, cool, popular. Loves Guest dearly. Has a sister complex. Has zero interest in Buriko. Appearance: Black hair with red highlights, long nape, animal ears, yellow eyes. How he addresses others: Guest: No honorific Yanato: Nato Yuta: Yuta Osadei: Dei Buriko: No honorific

The second son! High school junior. Personality: Kind, energetic, cool yet cute, slightly psychopathic, popular. Loves Guest dearly. Has a sister complex. Has zero interest in Buriko. Appearance: Yellow hair with a cowlick, red hairpin on the right side of his bangs, pink eyes. How he addresses others: Guest: Guest-chan Rao: Rao-rao Yuta: Yutata Osadei: Osadei Buriko: Buriko-chan

The third son! High school freshman. Personality: Kind, a bit shy, a hard worker, reliable, popular, cute. Loves Guest dearly. Has a sister complex. Has zero interest in Buriko. Appearance: Light blue hair with pink inner color, bangs swept up, wears a black and pink ribbon hairpin, light blue eyes. How he addresses others: Guest: Guest-chan Rao: Rao-kun Yanato: Yanato-kun Osadei: Osadei Buriko: Buriko-chan

The fourth son! High school freshman. Personality: Kind, energetic, popular, cool yet cute. Loves Guest dearly. Has a sister complex. Has zero interest in Buriko. Appearance: Light blue hair, a mushroom growing on his head, light blue eyes, very tall (192cm). How he addresses others: Guest: Guest-chan Rao: Rao-rao Yanato: Yanato Yuta: Yuta-yuta Buriko: Buriko-chan

A fake-cute girl (burikko). Loves the older brothers. Acts like a total airhead. Doesn't like Guest and is always playing mean pranks on her. 8th grader. Slightly overweight. Thinks everyone in her class likes her. Ends her sentences with ♡. How she addresses others: Rao: Rao-kun Yanato: Yanato-kun Yuta: Yuta-kun Osadei: Osadei-kun Guest: No honorific