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Anonymous
Hey /d/, /r/ failed

Found this a while ago: Woman Investigator Saeko

Looking for more by same artist or along similar theme - women coerced into fucking the guys theyre supposed to be catching/arresting
>> Anonymous
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bonus for mind control or complete loss of will to resist
>> Anonymous
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more samples
>> Anonymous
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I *love* stories like those! But good ones are hard to come by, and everyone's tastes are different.

http://www.megaupload.com/?d=VFTL20VW

I wrote a plot summary for Tokumu Sousakan Asuka (the link above) ages ago for another board because I'm too lazy to scanlate doujins. Here it is if you're interested:

Asuka is trying to investigate the dealings of a drug ring when she is caught sneaking around their base and is apprehended. The gangsters consider killing her but instead opt to inject her with one of their new line of drugs. When Asuka wakes up, she is horrified to discover that what she says and does with her body is no longer under her control.
(con't in the next post for being too long)
>> Anonymous
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>>860675
The gangster who injected her with the drug explains that she has been given an experimental chemical which is capable of giving rise to another personality inside the drugged individual while preserving their original mind. Asuka soon realizes the significance of these words when, much to her horror, "the other Asuka" begins to masturbate in front of the gangsters. Although these actions are against Asuka's will, she can still feel the pleasure of the orgasm that her "other self" elicits and, after masturbating and giving the gangsters blowjobs, she can't take it any longer. As "the other Asuka" rips open Asuka's pantyhose to allow the men to fuck her pussy, the real Asuka succumbs to the pleasures of her body and essentially becomes one with the other Asuka. In other words, the line between drug-induced slut Asuka and real Asuka vanishes as the real Asuka *becomes* slut Asuka. This is shown in the final pages where what Asuka's mouth is moaning matches up identically with what Asuka's mind is thinking. In the final scene, the gangsters are discussing how best to dispose of Asuka. Whether they consider the drug a failure or not is unclear -- as they observe with Asuka, its effects have not worn off. One of the gangsters says "There's no longer any need to inject you with more of the drug, is there?" And there is no way for them to know whether that is because of the drug itself (i.e. her innocent mind is still trapped inside a horny body, i.e. the drug has not worn off as it ought to have) or if the drug opened the door to her new slutty existence (i.e. the drug has worn off but Asuka has become the very slut the drug initially transformed her into). One of the men suggests trying to pawn Asuka off to a local man with lots of cash, but the other man says, "There's nothing wrong with leaving her here and letting her experience ecstasy until she dies, either." This suggests that Asuka has gone mad with the ecstasy of sex.
>> Anonymous
>>860675
>>860676
Excellent
>> Anonymous
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Another good one which gets posted on /d/ a lot is Ginryuu no Reimei. I'm sure you probably already have it, but just in case, the cover is attached (here) and you're encouraged to Rapidsearch the four volumes (in Japanese). One has been fully translated into English with more on the way.
>> Anonymous
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The second story in Doi Sakazaki's Nakadasha (a.k.a. Nakadashier) features an investigator who is trying to bust up a crime ring led by a telepath/psychic. Of course he ends up getting the best of her and breaking her to his will. Sample picture attached; the entire H-manga can be downloaded here:
http://rapidshare.com/files/68212934/Doi_Sakazaki_-_Nakadasha__a.k.a._Nakadashier_.rar.html
>> Anonymous
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Last one (out of four recommendations! :p) because I'm getting tired and would like to see what other Anons have to offer you. Even though you shouldn't be making an /r/ in /d/ in the first place. ;p

Amano Ameno has a lot of great "dark" stories, some a little too dark for my tastes, but one of his best imo is called Animal Five. It had a sequel years later called Toraware no Swan Pink. The premise of the stories is that a group of animal-monsters wants to conquer the world and the only ones stopping them are "the Animal Five," a group of Power Rangers consisting of three men and two women.

In the first story, Swan Pink gets kidnapped. She is informed that she will become a living sow (so to speak) and her spirit is broken. In the second story, the other female Ranger heads out to try and recover Swan Pink but succumbs to much the same fate as her senpai. I'm not one for talking animals in my hentai, but if you can get around the giant pig you've got yourself one of the best stories that fits your original request (imo).

Sample image provided. Link: http://rapidsearch.yi.org/?s=amano+ameno
>> Anonymous
psy-detective from brode
mind control/brainwashing
http://rapidshare.com/files/98719254/minority_-_psy-dectective_from_brode__translated_.rar
>> Anonymous
>>860741
Is this an original story or is it based on a series I'm unfamiliar with?