The art style reminds of the person who draws Hotel Voynich (Douman Seiman I think), so there's a 50/50 chance of being either. Not that Hotel Voynich is a mixed bag, but if you check his other works, you see there's a balance between H and non-H thrown in.

Here's your average day at Voynich Hotel (it's non-H).

Oh, in case you decide to pick up or see his other works, two things:

1. There's some continuity between hentai and non-hentai works (I'd give an example but it's an ending spoiler for both Voynich Hotel and a "that gave me feels" hentai of his).

2. THERE'S FUTA, BRO.

Well shit, that was way more of a fun read than what i was hoping for. Pretty random but i like how it wraps up at the end.