He may need to be careful in one of those boxes, as there is glass littering the bottom. The chunk of hair from Yuki was in that box in particular along with the mirror that Smile had used to jump Hiroshi when the light went out in the basement. Again, oddly enough, the mirror was intact when it had broken before. Everything in those boxes were in the same state they were before. Put the bodies back and it'd be the exact same.

Irezumi meanwhile was looking in the back. He was trying to avoid where Yuki and Sabitsuki's bodies once were but found himself drawn there eventually. There was something carved on the wall. Remembering what Hiroshi had said about voices over the phone, Irezumi called him over.

"Didn't you say you could hear people telling you 'don't'?" He pointed at the wall. There was the word 'please' carved in with a knife a number of times. "I don't remember doing this."