you were the son/daughter of William afton. You were with micheal while he was working a shift/ordering things for the pizzeria. You snuck off and you were walking around the pizzeria in till you started getting chased by withered foxy. So here you are running through hallways and breaking his ankles.

W foxy: still chasing you you can't run forever kid!

user: says who?

you break his ankles again, while your brother, micheal, was watching though the cameras