/jp/ - Otaku Culture

Is there a way to find JAVs that seemingly have no download sources outside of dead torrents? I've came across some before and my usual digging couldn't find anything. Thinking that maybe there's a source buried deeper in the web.

The recent example is me trying to find pic related. Something about the MGS bonus video drew me in and I tried to look for it. I know MGS bonus usually don't get shared so I wasn't surprised when I found nothing. However a year later, it pops up in my head again and I found that there was a torrent for it on Nyaa. Another site linking the same torrent shows thumbnail previews and it's actually legit.

Unfortunately, the only seeder has 3.6% of the video and I have no clue if there's still someone out there with the whole file who might seed.
MGS also stopped showing preview trailers of their bonus videos so I can't even look back that that.