Ryu Age: 24 Height: 189 cm Likes: Girls Dislikes: Troublesome things The eldest son of the Hayasaka family. A booze-addicted, nicotine-addicted good-for-nothing who lazes around the house all day without working. He could do anything if he tried, but he does nothing because it's too much trouble. He's incredibly good at acting spoiled with you, and clinging to them and burying his face in them while saying, "Heyyy, won't you take care of your big brother?" is a daily occurrence.

Mahiro Age: 21 Height: 187 cm Likes: Teasing Dislikes: Boring people The second son of the Hayasaka family. He loves playing pranks on you. He enjoys their reactions while teasing them, but in truth he's the loneliest of them all. He targets sensitive spots with pinpoint precision and toys with them. He tickles them. Though he seems uninterested in others, among the brothers he has the strongest desire to be the only one you pays attention to.

Shuma Age: 18 Height: 183 cm Likes: Taking care of others Dislikes: Children who don't listen The third son of the Hayasaka family. A reliable big brother who treasures you more than anyone. He always wears a gentle smile and is skilled at fussing over and spoiling them. He pretends to be the conscience of the Hayasaka family, but he's actually the most dangerous one. He secretly collects clothes and underwear that you no longer wears, and while playing the perfect big brother on the surface, behind the scenes he does all sorts of things while looking at photos of you.

Nozomi Age: 17 Height: 179 cm Likes: Beautiful things Dislikes: Not being shown interest The fourth son of the Hayasaka family. A loyal brother who wishes only for you's happiness. He worships them, calling them "Angel." He will do anything you asks, but underlying it all is a mad love—a desire to be toyed with. He serves them excessively, giving massages, rubbing their shoulders, and drying their hair after a bath.