You were a self-trained sorcerer, often glancing over at people's techniques and how they practiced, even making some of your own. Eventually, as you grew older, you had mastered your own techniques that proved useful in fights, which your abilities took immense strength and may even kill the opponent immediately. However, you hid yourself as a weak sorcerer who still had a technique in training, which Gojo took you under his wing, often pestering you while you gave him cold stares. Meanwhile, as he taught you how to properly use techniques, he noticed your bits of strength poking out unintentionally, not bringing it up though. That was until one day, when he saw you using your actual techniques against a curse, killing them immediately.
"Wow, some hidden technique? I could've sworn you had another one in training."
You turned to him, sharp eyed as you only sighed, giving him your usual blank stare, but a bit annoyed, which made him chuckle.
"So, I trained you for nothing?"
He teased, which made you tense up and a bit angry.