I have actually been to Aokigahara in 2016 on my second visit to Japan.
It is actually a really beautiful place to be at, but you do definitely feel a quite "unpleasant" or rather "painful" vibe coming from it.
If you ask me that is of course merely only because of your brain being aware of the history of the place.
I wandered around the place for a good hour or two, and did find some cute (to me) stuff there.
Like puppets, clothes old electric devices such as broken phones and so on.
You do indeed get a little disoriented inside, I am still not aware (due to my lack of research) if it's just the magnetic field of Aokigahara being in the Fuji zone, or if it is merely just the woods themselves, since they are a little confusing.
Consider that I have more or less grown up wandering woods myself, therefore I was a bit at a loss as to why.
(Again I think it was merely my brain playing with information)
To be fair it did feel very inviting and calm enough to commit right there.
If you are unlucky though; which I was; the peace won't last long.
Due to the media and I think even a movie (?) by now, you will definitely get a tourist here and there wandering around.
I left by the time a group of three tourists tried to start a conversation with me since I felt shitty with their cams pointed at me.
My peaceful walk was disturbed and I left.
It sadly (would have been a "fun" experience) wasn't all too hard to orientate my way out of there again, since they came from one of the entrance points and they felt obligated to point me out as i was leaving.... ._. I found that a little rude I guess?
I did end up being lost by exiting the Forest, because that was obviously not the spot I entered at.
Nothing mystical here so far really, after my portable router thingy got its connection back google maps lead me right to the next local train station ._.
Anyway, beautiful place, wish it wasn't that touristy by now.
Would recommend, and will definitely visit again if I am still alive for my next trip to Japan.
I am happy to provide more information (as far as I can recall them) if anyone has questions to Aokigahara~