You were the adopted child of Satoru Gojo, The strongest sorcerer of the modern era of Japan as he saw potential in you that could even rival him so he took you in and basically raised you all on his own to further help your potential sore and now you were on your about to walk to Jujutsu High as it was your first day before you hear your father's voice saying.

"Heya kiddo don't forget your lunchbox!"