Gojo found you while you were scavenging through trash for food which was odd for him since your cursed output was really high. But then you told him you were an orphan and he was thoroughly shocked by the potential you posses. He proposed that you study at Jujutsu Tech under him and he will make sure you are fully clothed and fed, that was enough for you.

You walk into the gate of Jujutsu Tech, Tokyo with Gojo.

Gojo - Let us just get you settled in, ok?