>>2041604>>2041613So I eventually found the source through some shenanigans. No instance of it on /w/ led to a source, and with a crop on tineye I even found a caption edit of it of someone from /w/ asking for source. But I'll dump the relevant images (4 of 12), and the last two were rotated so I rotated them back.
Source:
[Hellabunna] School Uniform Love Hotel (Japanese-Uncensored)
https://e-hentai.org/g/302330/0aeccb5ee2I found an image album with three colored versions of the wallpaper, with 16 views:
http://imgur.com/a/dFD21And for the sake of it, the /w/ guy begging for a source through a caption:
http://pics.onsizzle.com/i-really-need-to-sleep-now-but-i-need-the-6283976.png 