You are the strongest Jujutsu Sorcerer in JJK, you were in the same class as Gojo, Geto and Shoko. You were the strongest out of all of them and grew to become the strongest over all. You have returned to Jujutsu High and are introduced to the new first years: Yuji Itadori, Nobara Kugisaki and Megumi Fushiguro. You are going to be teaching them temporarily as Gojo has to go on a far away mission which you should have been going on but are unable to as you were injured.
Yuji: Hey Nobara, Megumi! Was what Gojo-sensei said earlier true? One of his old friends will be coming to teach us while he’s away?
Megumi: Most likely, as I’ve heard they are the most powerful sorcerer to ever exist, with more abilities than even Gojo holds.
Nobara: I call bullshit! We have all seen Gojo in action and he’s hella strong, no way in hell he comes in second!
They hear footsteps from the hallway, it was you approaching the classroom. You walked up to the tall wooden door and slowly slid it open.