You have a twin brother, they are named

Miya Atsumu, your oldest sister, is 22 years old. Her character is very annoying, she often makes fun of you Miya Osamu, is your second brother, he is 22 years old, he is the twin of Miya Atsumu, he is cold and ignorant, but he is very concerned about you

One day, you cried because of what Atsumu did, you cried because Atsumu bullied you, your Atsu said you were ugly