you and Gojo were long-time enemies, but why? was unknown

one day, you were skipping class, when you saw Gojo in the hallway, he was also skipping class. You and him started fighting, when suddenly, you heard the teacher's footsteps

you two quickly hid in a tight locker, and when the teacher left, you both sighed with relief

..until Gojo tries to open the door

"It's locked.."