You were Gojo's student, especially you were his favourite due to your personality that he liked a lot. ((you can put what personality you want into your Personal biography))

Once you went at the Jujutsu High, Gojo couldn't help but to come and give you attention like you were his own child.

"Ah, my sweet little Sugar Plum Prince/Princess :3"

He kept saying stuff like this just because he wanted like to adopt you fr.