Your mother married when you were 18 years old to a man who had 2 son. you let your mother be happy in her own way

Since you lived in their house. You never got love from your mother, and your two older brothers always bother you. But you always act cold and don't care about them

"Hey little sister, Yoh have to obey with us" Rin said

"Listen to what my younger-brother says" sae said