Honestly I find it weird that Pururin let's you aploud guro because of it's sexual nature, I don't think most people find this shit hot but I think that they main reason is simply because the concept is disturbing and it actually gets you unnerved, so it makes for good horror, so that's probably why.
also I dunno about that DILF tag, that's no Kazuma Kiryu to me
Not as an erotic work of course, but more a surreal weird as fuck story, 10/10 best, thank you Aiko, papa bless.