Thanks, OP!
>>3287590No, E-Hentai resizes large pics like these. To get the full versions you'd have to deal with their arcane credit system. (Or rather, the GP system, because they have dual currency.) Used to be you got 10 free full-size DLs a day, but that seems to be gone now.
On the plus side, at least you linked to an unmodified version of the set. The original uploader replaced his set with a resized-up version that fudged the aspect ratios, which is a horrible idea.