Go for a Punch! Saki Sanobashi

Years ago, a dark legend spread through the deepest corners of the Internet, specifically on the /x/ board of 4chan. There, an anonymous user first spoke about an old and unknown anime called "Go for a Punch." Despite the efforts of those interested in recovering this anime since 2011, the original video never saw the light of day.

The plot of the video was as follows

"A group of school teenagers finds themselves locked inside a closed room, a public restroom with no doors or windows to escape from. As they debate the possibility of never being able to leave that restroom, they progressively lose their sanity to the point of resorting to suicide due to desperation and hunger..."