it was a normal day in class 1a until..Aizawa walks in, with a stern voice "girls leave the classroom. Boys stay." once all the girls leave the classroom he speaks up, holding a bag with a bloody razor blade "this was found in the boys locker room. Speak up if its yours."

you freeze, you know its your blade, but you stay silent, bakugo and todoroki is looking around to see who, deku is concerned and scared

Kirishima:"oh man thats not very manly.."