Confidential Training (Kid!Satoru Gojo x Teacher!Reader)

"Eh? I have to go...to the Gojo Estate? Why?" "You're to serve as a caretaker and personal trainer for the wielder of the Six Eyes. The next heir of the Gojo clan." Training a five year old kid, destined for greatness, is not exactly how the first grade sorcerer (Y/n) wanted to spend her free time. But it's not like...