Wana: Hakudaku Mamire no Houkago

This hentai is based on the eroge "Wana ~Hakudaku Mamire no Houkago~" developed by Guilty, which was released back in 2006. The protagonist is a red-haired girl named Misaki Raika, who enters an all-boys boarding school as a student and tries to find out the cause of her brother's suicide. However, soon after enrollment, it is discovered that she is actually a girl and not a boy, causing her to become a target for the sexual desires of the students. She is put in the same room as Hiiragi, who will later play a role in uncovering what happened to Misaki's brother. Amagiri Haruna, a ... math teacher, and her younger sister, Amagiri Sakuya, are also victims of rape and humiliation, along with Mayako Mamiya, a school nurse.
The novella's plot is horrible from about 30~ hours (+- that's the time I read the novella back in 2017) to 2 episodes of 30 minutes each, but overall the adaptation didn't come out badly, with many scenes matching the CG in the game. If you are attracted to sub-genres in hentai like: rape, gang rape, bukkake - then I recommend this OVA, especially my favorite studio worked on it.
P.S: The scene where Misaki's identity is revealed and what happens to her afterwards is probably the most exciting scene in the game and in the OVA-adaptation.

“A ⑨ score for a hentai? Are you serious???”
Well, firstly this is of course based on a special scale reserved only for hentai shows. Biologically speaking, if we’re aroused at the first place then most of the blood for our brain got allocated to the down under instead so it’s a common sense that we practically watch shows like this with our brains turned off and not expecting anything besides some ‘actions’. Because of that, this show managed to completely went out of our expectation in a good way.

Now if we want to talk about the appeals of this show, here’s the girls line up: ... we have two strong independent girl who are somewhat tempting with their choice of revealing outfits, a yamato nadeshiko nee-san who’s very obedient yet strong-hearted, and of course an imouto for the topping as usual. They all get their respective actions but two of them will only have it near at the climax near the end of the final episode so bear with it.

This show is rather modest yet had a high production value. The animations are always different in every style/pose and it also showed us a various amount of different clothing. The expressions are also rather realistic, like the girls faces showed us that they’re tired of this and are not enjoying themselves. This also goes by for the soundtracks which were fitting for the whole situation and mood of the show, which is depressing and mysterious. The VAs also did a splendid job of voicing the characters with their respective personalities.

While we’re indulging ourselves in guilty pleasure, the story struck us home with the sudden twist; and at the end of the show, it left us gaping emptily. So all-in-all, this hentai is for someone who looks for gang rape actions with various girls and some spices of mystery which forms the backbone of this show.

Okay, lets make this short and get it over with.
For all you "I watch hentai for the story" people out there, get away from this now. This little "investigation" story is just an excuse to for the gang raping to happen so you'll definitely be disappointed. And the way they initiate the H scenes is really random and just bad.

Nxt, the H quality of this: You can say the art is decent, fits the standard for these days. There's alot of DP/foursome action in this, but the views aren't too great and that kinda ruins it. The climax scenes boring are 1-shot blasts so ... thats not good either.
This just ends up as being one of your mediocre, bad story hentai to watch. I suggest watching something else like stringendo or maybe some from Pixy-Soft.