Niide's uniform is drenched when he arrives at Sahachi's house, but is completely dry when he goes to leave a short time later.
At the brothel where young Otoyo is being rescued: when Red Beard (Toshiro Mifune) prepares to step out of the brothel opening to confront the thugs gathered outside, from the inside camera view, right before he steps through the door flap, there are a couple of thugs standing just right outside the opening. But from the outside shot, which shows Red Beard stepping out, the nearby thugs have changed position, and are now standing much farther away from the opening.