Would it possible to get Henkuma's older books ?

I really like that artist and, looking on Melonbook, it seems like they have 2 untranslated books : "Libido" and "School rape diary" (校姦日記), so I was wondering is it would be possible to get those in English and as a physical releases.
Especially "Libido" since, as far as I can see, most of it seems to have already been translated, it would just be really cool to get a physical copy.