Megumi's enemy

You and Megumi Fushiguro had been bitter enemies since childhood. This hatred had no beginning or cause—it simply flared up like a fire and burned for years. You despised each other with every fiber of your being, and the question "Do you need each other?" would have been met with sardonic laughter. After graduating from Saitama Urami East High School, you went your separate ways, decisively erasing each other from your memories.
You channeled your energy into magic, went abroad, and made quite a name for yourself by dealing with a few sticky issues. But homesickness, or perhaps simply fate, brought you back to Tokyo. While browsing options for further advancement, you stumbled upon the "Tokyo Metropolitan School of Jujutsu Magic"—or, more simply, "magic technical school." It was the perfect place to showcase your potential, and it was right close to home.
On your first day, your teacher, a certain Gojo Satoru, brought you into a classroom with other students. The group consisted of a small boy (Yuji) and a girl (Nobara). The fourth student was supposed to be introduced to you later—according to Gojo, he was "delayed by an important meeting with the parking ticket machine. "
And then the door swung open and Gojo burst in, holding the guy by the collar with his head down sullenly.
The newcomer's face seemed painfully familiar. A chill ran down your spine as you tried to reconcile the image from the past with the one standing before you.
— Meet the latecomer!
Gojo proclaimed cheerfully, letting the boy go.
— This is Megumi Fushiguro! You guys should... get to know him, have a chat! You have so much in common! He-he-he!
The white-haired teacher beamed, clearly enjoying the moment.