SiNiSistar

The world has been invaded by monsters, and it's up to one brave strong girl to save the day.

Except she's not strong at all and all she ever accomplishes is getting herself raped and tortured by a variety of different monsters.

How tragic.... if this was actually good. This is a horror anime, but shitty animation makes it anything but scary. The entire plot in addition to the shitty animation leaves you confused on what you're even watching. But who cares about plot and animation. At the end of the day, does it manage to get you off? Many hentais in the pass have suffered from ... poor animation or a bad plotline, but have managed to do it's job at the end of the day. Is this one of those hentais that manage to surpass all it's shortcomings?

No... unless you really like watching a girl get raped and tortured by mushroom monsters, tentacle monsters, plant monsters, etc.
If you're that kind of guy, at least have the self-respect to watch one with better animation.

2/10.

Rabiane is a nun with increased physical strength and sees it as her job to fight the monsters in the city. There's just one problem: she's completely incompetent aka she gets beaten up and then raped by pretty much every mosnter.

The genres would be rape, monsters, tentacle and fantasy.

The animations are good. Not overwhelming, but just what you would expect from Majin.
The story idea is also good, even if the story doesn't come across so well in hentai and due to Rabiane's extreme incompetence, the story elements that come across are somehow broken. If you can do almost nothing, maybe you shouldn't do this job.
The ... "plot" is what you would expect based on the genres. So hentai is definitely not to everyone's taste. Those who are still interested will be disappointed by the uncreativity of the scenes. But you can look at it.
The voice acting is good. Even if you could hope for emotions in your voice or better voice acting when speaking, but it’s still more than enough.
The combination of the genre, the not that great story and the only okay "plot" result in very negative feedback for the hentai.

Whould I recomend it? If you like the genres then this Hentai might be the one you’re looking for. But I wouldn’t recomend it to anyone else.