Plain and simple fan service. The scenes are introduced by resident milf Goei in what looks like some sort of variety show 4th wall break format. Because of these intros and outros the scenes themselves really only last a minute or so and are just barely the thinnest excuse for setting up some raunchy lewd camera angles and as much exposed skin as they can show without having to pixelate it. I'll say what I always say in regard to shows and specials like this: there is real hentai out there for you to watch, this is just porn with extra steps. 5/10