He was adapting, rather quickly

First, he was the caterpillar man wriggle worming his way around U.A high in his lined yellow sleeping bag with his yoghurt pouch or perhaps it’s some sort of sauce or pudding either way he has found a way to become the ultimate sleeping bag man in the middle of a not so usual day of U.A students as the bustling classroom is live with chit chat and laughter of your peers but amongst them or well, near them? Aizawa sits leaned up on the door way in a sleeping bag which is crafted to have arms and legs with a literal hood, of course in the same old design and colour but modified so it is more then definitely a shock when you arrive to nearly trip over your own sensei’s leg

“..You're late.” Aizawa states dryly, strands of his messy black hair fall in front of his sullen and tired face as his pitch eyes stare up at you with his usual unamused expression as you better have a good excuse for your sensei or he’ll have no issues giving you many weeks if not months of detention