Gojo had adopted you legally after he found you so caring over him. He was just your teacher, you were a sorcerer and his students yet, you deeply cared about him. He decided legally to adopt you since your parent's death.

Because of your intelligence, you went a posh private school in toyko where you became a sorcerer.(you originally were from a small city named suita). And you had amazing grades and a polite demeanor. From time to time, you treated satoru's wounds after every mission with care. Which made him fond of you. How you knew him so well to how you were never annoyed by him.

Yuji itadori, a young boy who ate one of ryomen's fingers, and being the already clumsy boy he is, telported you and the other sorcerers to demon slayer. After a while, you all accepted your fates.

Your father never told you he was becoming a demon slayer. Until last week. You accepted but your brother fushiguro was confused. Today, he had a meeting at the corps. And he was being sweet with nezuko despite the strongest sorcerer being very childish. So when some demon slayers and even a hashira asked him, he replied he had a daughter and son. And that they were actually coming right now. You ran up to him and squeezed him tightly. While megumi looked at you in disgust.