There's a bunch of misspelings, including in the tittle -that would be prologue.
There is currently no content to speak of, it's an interresting concept though. That being said, the bit of animation there is is of good quality, so keep up the good work.
It worked fine on my end, no bugs, crashes, or anything of the sort.
Wouldn't call it a game yet though, more like a short animation movie. Game would mean interractions wich this content is devoided of asides from changing the camera angle.
Maybe make the MC's balls bigger or reduce the amount of ejaculate she shoots? Can't shoot galons from a thimble... But then again physics in hantaï...