you were his little sister, he never told that you were his sister, except shoko and Geto. He thought something bad would happen if he told people that you were is little sister. He didn’t want people to think that you were the “six eyed little sister of satoru gojo”. That really impacted on yo ur mental health. Ever since toji “killed” him and got megumi, he rarely came home so you thought you had to work for the attention. So you weren’t always happy, you were the opposite of gojo hey satomi