Disagree on the disagree. You can specify pretty much any length between frames und make them as small as possible (like change 1 black pixel to white). Just do a quick search for "as long as possible gif" - it's a finnish art project.
Headmaster is out 'cause i'm not into bdsm/punishment, but teaching feeling was awesome. harem hotel was more like what i was thinking of - anything in the style of voyeur villa but with 3dcg?
By the way - anyone got some recommendations for management games?
Just finished Tame It, Life with a flirty Step-Sister and Isekai Brothel (yeah, job's been grindy and i'm just looking for something mindless)
and had a pretty decent setup story-wise... beginning in a trailer and ending up in a hightech facility...
plus decent choices to avoid scenes you don't wanna see