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The parent of that image has a source attached to it which is:

"Borderline3", a 1996 doujin CG set of Sakaki Naomoto's circle Master Mind

A quick google search shows this review which has some more information.
Given that this CG-set was released before 2000, you might have a hard time getting a hold of a complete version.

That said, the forum is generally not used to ask this kind of questions about pictures. It's only meant for technical support and discussions regarding Danbooru itself.

GabrielWB is right, this isn't the purpose of the forums. I probably shouldn't help out, but this might be a good chance to practice your search-fu, just for future use.

If you look at your target image, you see the artist (Sakaki Naomoto, in red) and from the source you know the title of the CG set (Borderline3), and the date (1996).

Knowing this, you want to find the rest of the work. Click on the artist's wiki page (the "?" by their name). Doing so gives you a bunch of links for them including pixiv & webpages. You know the image is almost 20 years old, so most of these will be useless (it long predates Pixiv, DLsite, likely even Amazon.co.jp. We're in luck though in that we have an old, dead site of his. Being old, it's more likely to have something related to your image.

If we click the link, we can confirm that yes, it is dead. Knowing that, let's hop over to archive.org and pop that URL in there. Doing so gives you archives of the artist's old site from 1998 to 2005 (the latest archives simply copy the "site is dead" version you can currently see). 1998 isn't too far off from 1996, so let's try that. Lo and behold we actually have a decently archived site (sometimes especially early on archive.org will be missing things). From here, you can look to the navigation bar and find something like "CG" or "Gallery" or "映画" or something along those lines. These personal websites typically had galleries with one of those names.

Clicking on his "CG" link, and scan for "Borderline3" and you've got at least two images there from the series including the cover, and a couple from the previous version "Borderline2".

From here, if you want to see if you can find the rest of the set, take the cover that you just found and download it. Pop over to Google Images, Tineye, Bing Image Search, IQDB, SauceNao, pretty much anyone with a visual search engine. In this case we run into a dead end, there don't appear to be any living indexed hits to the cover of the CG set, which would almost certainly show up if it was still available somewhere on the web.

Going from the picture that's not the cover, you can also see the filename was "bl3_2.jpg" which might imply if digital versions of the set existed, they might be labeled "bl3_3.jpg", "bl3_4.jpg" etc. It's another angle to search from, in this case it also doesn't seem to yield results.

Like GabrielWB said, this is a very old set, the web was still pretty much in its infancy in 1996 It was most likely sold on floppy disk or CD (providing it wasn't paper), first person at a convention. It likely didn't get uploaded in its entirety anywhere, but if it was it'd far more likely be posted to a BBS or usenet which aren't directly accessible by the web and fairly transient anyway (image boards as we know them, and easy upload services like imgur didn't exist back then). Even if it had been uploaded to the web and hosted somewhere, 20 years is a long time for an old doujin gallery to disappear from the web. In any case, rather than posting this sort of the request on the forums, these are the sorts of things you should learn to seek things out. Had you found them, and figured they were good enough, you could then take them back and post them here and see if they make it through the mod queue. I would be careful with these on account of quality though (Danbooru was a very different place 9 years ago when Albert first posted this).

Updated

Hmm I was digging around a little more for the heck of it and found the following on the artist's website:

ホストプログラム:MPN−BBS Ver3.0
プロトコル   :Ch2. 28800bps V.34 + V.FC
         Ch3. 14400bps MNP5 /V42.bis

アクセス番号  :03-3939-8014(代)
         「ざっくざっくハマる人よ」と覚えてね(笑)

えと、今まで番号はここでは公開していなかったんですが、リニューアルと
いうことで公開してみることにしました。でもトラブルが多くなるようでし
たら、また隠してしまうかもしれません。
というのは、このネットの維持・メンテナンスはすべて私個人の自費でまかな
われているもんですから、いたずらに会員を増やすつもりはないんです。
正直言ってROM(Read Only Member)やDOM(Download Only Member)の方
や、むやみやたらと討論(というより人の揚げ足取り)好きな方には来てほし
くありません。そういった方々のためにに裂く時間は私にはないんです(^^;)
会費などは一切いりません。カンパなどもまったく必要ありません。その
かわり自分でつくったネットですから自分の好きなようにしたいんですよ。

そんなわけで、こんなわがままなネットでも興味があるってゆー方は一度
アクセスしてみてくださいねー。

This seems to indicate the artist *did* indeed upload to an old BBS system. I'm a little too young to know a whole lot about them, but they were essentially systems that worked by allowing a bunch of people to dial into a single machine that was essentially offline except for the people that dialed into it (think an internet with 1 server and a handful of users at any given time). This system almost certainly got shut down long ago and you'd have needed a dial-up modem and good long-distance phone plan to Tokyo to have made any use of it anyway. Knowing that his work was on this sort of system though might explain why very little appears to have spread on the web proper.

Thanks for the info, Shinjidude. On a side note, I posted the link to the picture in case a moderator decided it wasn't worth keeping anymore. They had a similar picture on Gelbooru, but it was deleted when I posted a thread, asking where I could find the rest of the series.

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