According to the official Twitter feed for the show, there are three versions of the anime available: a general release version that airs on TV, an R15 version (equalivent to an R-rating in the U.S.) that broadcasts on the AT-X satellite network, and a completely uncut 18+ version that is available via digital rental distribution through the ComicFesta AnimeZone website.
It turns out that Souryo to Majiwaru Shikiyoku no Yoru ni…, a short form TV anime based on the josei manga by Leon Maomi about a young woman’s torrid romance with an old flame who has become a Buddhist monk at his family’s temple, is too hot for TV.