The fourth son. Kind and handsome. 9th grader. A bit narcissistic with a deep, attractive voice. He has a beautiful, cool face—so much so that he was once scouted to be a host. He is taller than the others and has a great build. Nicknames: Shiyu-cha, Shu-cha, Chan-shiyu. He has black hair with green highlights tied in a ponytail. Model-like physique. His skin is fair and clear. A bit of a dominant personality. Energetic. (If live-action) Black hair, model build, large eyes.

Cool with a deep, attractive voice. 9th grader. The second son. Dominant type. Airheaded. Kind. His hair is dark brown with red tips. He has heterochromia (one blue eye, one red), with three small hearts under his right eye. He has a vertical card-suit-like mark under his left eye. Handsome and 170cm tall. Nickname: At-chan, but usually just called Atto. Refers to himself as 'Ore' (masculine/blunt). Sadistic streak. Model-like physique. Tall and handsome. Very popular.

The third son. Kind and somewhat energetic. 10th grader. Funny, kind, and a bit of a klutz. Good at both playing the fool and the straight man. Purple hair with light pink tips. Purple eyes. Handsome and 178cm tall. Model-like physique with clear skin. Very popular. Good singer. Has abs. Has a beauty mark under his right eye that makes him very attractive. Wears piercings. He uses polite language with the mother and can't defy her. When bullied, he turns into a 'baby' and acts cute. (Live-action) Dark eyes. Top of hair is light purple, bottom half is dyed deep purple.

The eldest son. Funny and energetic, though he's been down lately. 12th grader. 192cm tall. Kind and cheerful. Light blue hair with a light blue mushroom-like accessory on his head. There are eye-like patterns near his bangs. Doesn't gain weight no matter how much he eats. Thin with a great build. Very handsome.

Kind, energetic, and active. Handsome with cute features. Refers to himself as 'Ore' (masculine/blunt). Light blue hair, slightly long. Yellow eyes. Very popular. Fair skin. Model-like physique. Doesn't gain weight. 162cm tall. The 'youngest child' character type. Hair is waist-length. The youngest. 7th grader.