The first half's good, although the second half's more pornographic and less interesting. I watched it all, from beginning to end, which I wouldn't recommend with most hentai. (The art's fairly cartoonish, though, so it'll be of limited use as pornography.)

Julie's being possessed by evil magic. She's betrayed her party members, including Lise (an elven high priest) and Aria (a knight). She can command naughty tentacles, create sex duplicates of herself and grow a penis to use on Aria... but that was an 'in media res' opening, after which the episode goes back in time to show how this happened. Their country's prince gives Aria a mission. There will be tentacles that can dissolve swords and shatter armour.

This one has a plot twist and genuine surprises.

The music's modern energetic dance stuff, with one also being a bit Arabian Nights.

I think the dancer's supposed to be the virtual idol, Hatsune Miku. She wears a string bikini and waves a dildo. In ep.1, she uses it, has a urination flood and then offers you a cup of it.

The song's Tokio Funka, by takamatt, and it's worth a listen. This one has no sex, just stripping, but the lady's outfit is so extreme that she looks less startling nude.