Neocities.org
There was a video I saw back in the day. I cannot find it on youtube but what I do remember is that it was basically an edit of the song "mermaid" by tatsuro yamashita. It featured scenes of a mermaid swimming around in what may have been a lake, lagoon, or beach. It (spoliler) ended with the mermaid getting killed or something. The ending was very abrupt, violent, and opposite to the overall vibe of the song.
It fit in a really weird way. I don't think it was an official video, but it all seemed to be either movie clips or a professional fan video. Either way, if anyone has seen this video, drop a link if you can.
I feel like this video was uploaded before 2010, though it might be newer, but not much newer.
Mmm... seems interesting. Will give it a look
Have you seen any of the Guinea Pig movies? Because someone on a discord (yeah I know) I'm in mentioned the clips could be from ove of the movies.