If you have been watching"Ben 10" during it's time then probably you will remeber this opening scene from the original cartoon series.. Yet how this scene will end is something that you migth remeber for even longer period of time! The whole idea of this hentai parody is that the mutual boundry apperaed between Ben and Gwen has happened to turn into something more and this is not just sex but the threesome sex with grandpa Max! But unlike the intro animation the hentai part is quite interactive and it is up to you to decide how exactly you need to see growned up and big-chested red-haired Gwen to get fucked by Ben and Max inside the trailer! Just don't let the action to stop because if the pleasure will drop too low the game will be considered over!