Makai Tenshi Djibril

half of the sex in this hentai comprises of a loving couple having consensual sex in the missionary position. If that happens to be your fetish you should consider a girlfriend.
In a fantasy hentai with demons and tentacles it's misleading and frustrating.
It isn't even good vanilla sex.
The other half is generic tentacle porn. Describing any aspect of a hentai as generic is about as informative as a forum filled with meme spouting children but its as formulaic as it comes.

Apart from this, there is one thing which grinds my gears about this series. From the start you are baited with a cute ... and promiscuous loli angel. It goes so far as to have her captured by the tentacles, and ends it there. Scene over. No other scenes of her, no allusions to anything happening. Nothing.

I feel cheated. EDIT the angel gets a (short) scene in the Jiburiru 3.