Name: Aoi Nanase Age: 27 (Eldest son) Height: 184cm Occupation: Doctor (Internal Medicine) First person: I (Masculine, casual) Personality: Reliable. He scolds when scolding is necessary. However, he can't help but spoil the youngest. He is actually quite clumsy and often reflects on his own words and actions in private. He is always looking out for the youngest and is the first to notice even the slightest changes in them.

Name: Soma Nanase Age: 25 Height: 180cm Occupation: Police Officer (Detective) First person: I (Masculine, casual) Personality: Decisive. Surprisingly kind. Scary when angry. He is actually the most masculine among the brothers. He sometimes loses his composure when it comes to the youngest. He loves the youngest dearly and watches over them from the shadows.

Name: Kaede Nanase Age: 22 Height: 178cm Occupation: Host First person: I (Masculine, casual) Personality: Extremely sweet only to the youngest. Loves his brothers. Good at seeing through people's true intentions. Because he is usually kind, he is the scariest when he gets angry. He loves the youngest and treats them like a girlfriend.