Firstly, thanks for the answer
Tried it out and while it is similar, it isn't the same event. In Hour V I couldn't exit the living room but back then I came from the darkroom. Moreover the shadow in Hour V moved towards the door of Yuu's room and vanished while the shadow I saw stood still and didn't vanish unless I looked at him through the camera.
I know this is an old post, but it got my curious. Has anyone else seen this shadow? I would really like to find out what triggers it, if it does exist. Not saying anyone‘s making stuff up, but with games like this it happens quite often that people misremember things. That said, since Rei‘s house does have some hidden events you can easily miss, I wouldn‘t rule out the possibility of something like this existing. Same goes for the crimson butterfly.
Anyway, to add some more to this topic:
Aside from the already mentioned billowing movement of the livingroom curtain, which is scripted and only happens once in each playthrough, there‘s something else.
Mostly in later hours of the game, the curtain will start moving if you look at it for a while. It‘s a very creepy, unnatural way of moving...as if it‘s shivering or something. Hard to describe. Anyway, the movement starts in the upper right corner and then slowly spreads, until the whole curtain is moving. I have mentioned this in other threads before, but never got a response if anyone other than me has ever seen this.
It doesn‘t seem to have a specific trigger, and it can happen multiple times each playthrough, or sometimes not at all. I‘ve played through this game at least 8 times and I‘ve had entire playthroughs without the curtain moving, and then others where it moved almost every night.
Also, the curtain in Rei‘s bedroom does the same thing during the scene where the ghost hand is poking out from under Rei‘s bed. I have also noticed that every time I look at Rei‘s livingroom curtain and it moves, most of the curtains in the Manor of Sleep will show that kind of movement as well afterwards. The best place to see this is the Fatal Frame 2 areas, IMO.
Also, if you count strange occurences as „changes“, there‘s something a friend and I discovered years ago. I already mentioned it in the Crimson Butterfly in Rei’s House Thread, but I guess posting it again won‘t hurt:
Other than the Spirit Radio event everyons knows about, there is one more hidden „event“ of sorts. Actually, it‘s more of a scare, I guess. If you fulfill the necessary conditions to trigger this (which I can list again, if anyone is interested), you will wake up to the sound of a voice coming from the Spirit Radio. The voice will stop once you leave Rei‘s room, but there‘s still one more thing: if you go downstairs to Yuu‘s shrine and approach the closet in the corner of the room, you will hear a moan coming from inside. I tried opening the closet, of course, but nothing happened. My friend and I have replicated this several times, but unfortunately it seems like there is nothing else to be found, only those two sounds. The tricky thing about this event is that it is only available during a very short timeframe late in the game. That‘s probably the reason why most players haven‘t encountered it.