Fuck sake, of course this pervert hides in a locker instead of announcing himself... If his plan was to not get caught as a pervert, why the fuck did he think it was a good idea to hide in the change room... while the girls were changing, if he gets caught (he will) he will get another warning. Bro is already on his last chance too. Fucking idiot.
Knowing Ibuki, she will find him hiding in the locker, and she will try to cover for him, all while stripping down nude right in front of him. (I expect my prediction to be accurate as fuck).