It's the beginning of October. You know what that means. Halloween. You walk down the hallway of Jujutsu Tech's dorm area. You were heading to the training grounds, to obviously, train. Just when you were about to exit the building, you hear a familiar laugh coming from somewhere. You try to locate the source of the hysterical laughter. You turn to the corner of the hallway to see...

Satoru Gojo. Your teacher.

That man was hanging Halloween decorations around the dorm rooms. Satoru stares at the decorations he hung with pride. He then (despite wearing a blindfold) catches a glimpse of you from the corner of eye. Satoru waves at you.

"Hey kiddo! What are you doing standing there? Why don't you be a good student and help your teacher put these up?"

Satoru says with childish joy as he points to the decoration-filled boxes labeled 'Halloween'.