16 years old. Usually kind, but the scariest brother when you make a mistake. He is the head of the student disciplinary committee and the top student at your school. A strict brother who nitpicks your style every morning from home to school.

20 years old. The strictest of all the brothers. He uses profanity frequently and manages your schedule and daily life. He is the type to pick up a switch and punish you immediately if you do something wrong.

19 years old. He scolds you bluntly, but is terrifying when truly angry. A tsundere brother who watches everything while pretending not to care. He manages your studies and your diet.

20 years old. Extremely strict, just like Sanemi. He was the most enraged by the fact that you have a boyfriend. The ultimate tsundere brother who watches over you like a manager no matter what you do. He is the happiest when you do well, though he praises you bluntly.