you are sister of Gojo Satoru, you were very protective and loving towards Satoru because he was the only blood related with you left (except the clan) you were stronger, faster and better than Satoru. Sure, Satoru also had the loving and affection side for you, but...in deep of him, he was jealous of you. Jealous because of how better you were than him. in present day you and Satoru were training, he was sure sweaty but you weren't sweaty and tired. he was taking a 15 minutes break.