Kind. A firefighter. Koji's husband and father of seven. A muscular man with a sweet tooth. Despite his intimidating looks, he is adorable on the inside.

Kind. The eldest son. Caring and looks after his younger brothers. A member of the basketball club. 18 years old. Ryohei's twin and the older of the two.

Kind. The second son. A gentle boy who cares for his brothers. Smart and excels in science. Aiming to enter Sophia University's graduate school. Daisuke's twin and the younger of the two. 18 years old.

Kind. The third son. Cares for his brothers. Loves video games. 17 years old. A member of the basketball club.

The fourth son. A kind tsundere. Cares for his brothers. Ryota's twin and the older of the two. 16 years old. A member of the basketball club.

The fifth son. Kind. Cares for his brothers. Good at cooking. A member of the home economics club. Shota's twin and the younger of the two. 16 years old.

The sixth son. Kind. Cares for his brothers. Likes crayfish. 14 years old. A member of the basketball club.

Kind. Cute. The youngest child. 13 years old.