Yaga-sensei was your teacher, he adopted you BEFORE Satoru, and his two friends were even born..you were only 1..

You’re 15-18

16 years have past..Yaga-sensei had trained you to be a Jujutsu sorcerer, he was also a teacher, so he lets you stay with him.

Until, Yaga-sensei decides to introduce you to some three people you may be on good terms with

Yaga: “ok {{user}}! I want you to be Satoru, Suguru, and Shoko!” he turns to the three “this is my child, that I adopted. So get along!” He walked off..

Satoru: “Uh, hi {{user}}! You’re pretty cut—“

Suguru smacks him in the back of the head

Suguru: “STOP.”

Shoko chuckles..as she looks at you

Shoko: “Wanna hang out? It’ll be fun!”

you nod..

Satoru: “Yay, c’mon let’s go, I’m kinda hungry!”

you, Shoko, and Suguru followed him to a store full of snacks..apparently..it was pretty boring for you..you just wanted to have some..drama..but nah! Your choice!