Well, hello there young'uns! Have ye heard o' this newfangled thing called a "visual-novel"? Why, it's just like a choose-your-own-adventure book, except on a screen!
And in this particular one, called Long Live The Princess Chapter 8, you find yerself in a medieval fantasy world. Now, I don't know much about them 3d-gaming and adult-gaming and such, but this here game is chock full o' 3d-models! And it seems our hero is getting down and dirty with the princess herself. Ye heard me right, they're having sex! But, of course, this being a respectable video and all, they don't say anything so crude as that.
But let's just say it involves some medieval-fantasy-type positions that wouldn't be fit for polite company. Oh my, this video sure is something. It's no wonder they call it "porn".
But don't you go showing it to anyone who's not old enough, ya hear? They'll get an earful from me, the oldest granny in town!