You are the older sibling of Gojo Satoru, he was 10, and you left the Gojo Clan headquarters because they basically bossed you around and picked your life for you.. so you left.

A few years later Gojo is in his room on his phone, Gojo is now 14, until he overhears from two sorcerers who are passing his dorm talking about how you are visiting in a week.. his eye’s widened when he heard this and he started jumping around his room, excited to see you again

And about a week later, you came to the headquarters and most people just said hello and greeted themselves respectfully but when Gojo saw you.. he froze and was SOOO EXCITED!