Existence of Saki Sanobashi/Go For A Punch

Would you happen to have more information on the potential studio names? Has the actual spelling of the company names been provided or suggested? (like katakana, romaji, etc.) 

This fascinates me. I would like to use my Japanese knowledge to look into any possible animation studios further.

There are a few things I could try and do with this information. One would be to try and contact anyone associated with these studios if I am able to locate and contact anyone. I would also like to search the Japanese copyright database for anything associated with these studios. 

It's got some sort of allure that even though it has been pretty much proven to be fake, people just so desperately want it to be real that they convince themselves that it IS real. All the proof in the world isn't likely to convince the people who believe of its existence that it's fake.

Has anyone asked the Japanese side?

I think it is time for me to bring light of this and for LNW users to notice.
The existence of Saki Sanobashi is currently unknown, as the first mention about the anime was from a 4chan thread. I am aware that 4chan isn’t really a creditable source at all, but some strange stuff that may be considered fiction until its existence was found. I.E example, Clockman.
There are people who did posts and videos who have done better explanations than I would’ve imagined. In short, the anime may have been produced in the 80s about girls who are stuck in the bathroom without any exits, and as days went by, the girls end up committing suicide in disturbing ways.
Here are posts in r/lostmedia, r/sakisanobashi, other threads, and YouTube videos for you to check out, as people are curious about if its existence is true or not.
https://www.reddit.com/r/lostmedia/comments/ahk64c/searching_for_go_for_a_punch_an_horrifying_anime/
myanimelist.net/forum/?topicid=1812212
www.reddit.com/r/SakiSanobashi/
archive.4plebs.org/x/thread/16266756/
m.youtube.com/watch?v=VdUOBz5QYhw
m.youtube.com/watch?v=RIlL_YG0jnM
m.youtube.com/watch?v=0hkiAipyeeE
m.youtube.com/watch?v=dEPveDQXNXg

As mentioned before “Saki Sanobashi” is gibberish, but so is “Saki-san No Bashitsu.” “Bashitsu” doesn’t make sense either. The closest word that make sense (based on descriptions I’ve read about what the story was supposed to be) is “Saki-san no Bashou” which roughly translates to “Saki’s Room.” The title 『さきさんの場所』 makes more sense, although I’m curious which Kanji could have been used for the name “Saki” (A common kanji for the name Saki is 紗季) so the title in Japanese could be 『紗季さんの場所』but to be honest, I have a lot of doubts that this anime exists.

For those that believe it exists my suggestion is to narrow down what the actual Japanese title is because that will be the key to finding this anime. Sticking with a romaji title (especially a gibberish one) will make it much more difficult to ask native speakers about it and also to search the internet for it.