Okay, now for a brand new story! I am still currently working on the next chapter of FNFAF, but I had this idea and I'm bringing it to you now. Please enjoy Lust Effect, the sexual escapades of the Mass Effect universe. While the chapters are in the same story, it's going to mostly be one-shot stories. Your first pairing, Ashley Williams and EDI.

Enjoy!
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Chapter One

Ashley Williams was going through…some stuff. That stuff was that she had been alone for a long time now. By alone, I of course mean single…okay, Ash was horny. Really horny, the kind of horny you only get if it's been a while. It never used to bother Ashley: she was career military, put everything into the job. The only thing Ash ever made time for outside of the military was her family. But now, it was a daily struggle to stay focused on her rounds on board the Normandy when all she wanted to do push some guy into a bed and ride him until she was satisfied.

But unfortunately, because she was career military, that meant following the rules and the rules said no fraternization. Ash was tempted to ask Commander Shepard for permission, but despite the fact that they had been through hell and back and she would probably say yes, Ash couldn't quite bring herself to ask. So, it went on for weeks: Ash was incredibly frustrated and short with almost everyone.

After a particularly bad shift where she snapped at EDI for no reason, Ash decided that enough was enough. Ash went to the starboard observation deck and locked the door behind her. This was her private place on the ship, and she needed to take care of business. Ash propped herself on her couch, where she normally read her favourite books and unzipped her jacket, not bothering to strip all the way. God, she needed this. Ashley's hands began exploring, and one hand found its way through her pants and to her pussy, her fingers gently rubbing her folds.

Ashley began to moan, her hips bucking as she rubbed. Her other hand groped her breast, teasing the nipple. Ash couldn't stop the moans coming out of her mouth, but she clamped her mouth shut to try and stifle them. Ashley went to slide her fingers inside…

"Lieutenant Commander Williams, may I have a word?"

Ashley yelped with surprise, trying to cover herself as she fell off the couch. It was EDI, standing there in her mechanical body. Ashley wasn't a hundred percent comfortable with the situation, seeing as that body beat the crap out of her and left her in hospital for months. But right now, Ash was more concerned with trying to zip up her jacket and stand to face her.

"What the hell, EDI?" Ash demanded once she was decent enough to stand. "You don't just come barging through locked doors like that!"

"My apologies," EDI said, her arms folded behind her back, chest out without a care in the world. Maybe because she was still unsatisfied, but Ash started looking at EDI's body in a way that made her pussy really, really wet. Which was new for her, seeing as she always thought of herself as straight. "But I wanted to talk to you."

"What about?" Ashley asked, folding her arms. Maybe if she kept this conversation focused on EDI, Ash could get out of this before she died of embarrassment.

"You've been incredibly irritable for several weeks, and today you told me I was a 'synthetic bimbo' and stormed off. I was concerned that there could be something wrong with you. When I arrived at the door, I heard moans and incorrectly assigned them to distress."

"So you just barged in here while I was…" Ash couldn't bring herself to say it.

"Masturbating, yes," EDI said matter-of-factly, "I wasn't aware that sexual frustration could cause such irritable behaviour. I'll remember that in the future. Would you like some assistance?"

Ashley gaped. "Whhhhhy would you ask that?" Ash asked once she got control of her body back.

"Well, I've had access to Jeff's personal adult vids and there is a fair amount of female homosexual material. And friends are supposed to help each other."

"Yeah, but your body…"

"I can change the density of my skin so that it's pliable," EDI explained, "and I have self heating that can raise the temperature of my body so I'm not cold to touch." EDI walked over and gently grabbed Ashley's wrist. Ashley, curious more than afraid, let EDI lift her arm and place Ash's hand on her shoulder. The metal skin was warm to the touch, not human temperature but comfortable. Ash let EDI move the hand down and over her robotic breast. Instinctively, Ash squeezed and it felt like a normal breast. EDI let go of Ash's wrist and Ash grabbed her other breast, playing with them and teasing them. There were no nipples to play with, which was different, but Ashley kept working them anyway. EDI, after mentally making sure the door was locked and the security cams were being fed looped footage in case anyone other than her was watching (it paid to be the ship AI on occasion), moaned softly.

Ashley stepped closer to EDI, who leant up to her and kissed her. EDI's lips were soft and warm, and soon Ash forgot the fact that she was straight. For those lips, Ash would do almost anything, at least at the moment. EDI's hands began to wander over Ash's body. Ash pulled out of the kiss and nodded to EDI, who took the cue and slowly unzipped Ash's jacket for her. Sliding out of the jacket, Ash's tanned breasts were revealed, barely covered by her bra, which EDI quickly and deftly unhooked and Ash let fall to the floor.

No words were exchanged when EDI pushed Ash onto the couch and straddled her. Ash wasn't used to being the bottom, but she let EDI use those hands of hers to gently caress her breasts, gently teasing her nipples. Ash was moaning in no time and EDI eventually slid down and undid Ash's pants, sliding them and her black panties off in one movement. EDI pushed Ash's legs apart and started kissing her way up Ash's inner thigh. Ash was dripping with anticipation by the time EDI got to her pussy. EDI looked up at Ash, looking for permission.

Ashley didn't say anything, she just put a hand behind EDI's head and gently guided her in. EDI took the invitation and opened her mouth, extended her tongue and began to lick at Ash's pussy folds. Ash's body arched and she threw her head back and moaned loudly as she came. Ashley was breathing heavily as EDI came back up and the two kissed again, tongues dancing around in their mouths.

"Are you satisfied, Lieutenant Commander?" EDI asked, and Ash wasn't sure how to respond. "Or should I continue?"

"Don't you want to be satisfied?" Ash asked, and EDI shook her head.

"I'm a synthetic, I can be satisfied whenever I choose," EDI said, "I also have something to show you." EDI stepped away, and Ash watched as EDI pressed on a part of her body, just above her pussy. Ash's eyes widened as a robotic dick emerged out of EDI's body, thick and long and oh so hard.

"Do you like it?" EDI asked. "I found the modification, but was unable to test it before now."

"Oh, you've got to put that inside me right now," Ash said, widening her legs and spreading her pussy wide. EDI obliged, and teased Ashley's hole, rubbing the tip of her dick all around but not putting it inside until Ash was quivering with pleasure. EDI then thrust it inside and Ashley moaned and groaned and gasped as EDI slowly began to move.

"Oh yeah, faster EDI!" Ashley groaned and EDI obliged, lifting Ashley's leg up and getting her cock deeper into Ashley's pussy.

"Yes, yeah, Oh GOD YES! HARDER!" Ashley yelled and panted as EDI kept her pace, slamming her dick inside Ashley.

Ashley had never had sex this good. No guy could keep going for this long without cumming, but EDI just kept pounding away. Ashley reached down and began rubbing her clit, driving her body over the edge. Ashley came hard, her body convulsing as EDI held her tightly, not pulling out. Ashley was breathing heavily as EDI slowly pulled out of her, stepping back.

"Oh god, that…" Ashley said breathlessly, "that was incredible."

"I am pleased you're satisfied, Lieutenant Commander," EDI said as she retracted her dick.

"EDI, you just fucked me good," Ashley said, laying back, "You can call me Ashley. And we are definitely doing this again."

"Of course…Ashley," EDI said, and leant down and kissed Ashley, who eagerly reciprocated. Maybe there was something to these same-sex liasons after all. Ashley quickly tidied herself up before EDI opened the door. Now she was satisfied, Ashley could focus on her duties.

If one good thing came from this, it was that Ashley wasn't weirded out by EDI's new body anymore.

That definitely won't be the last we see of Ashley and EDI's escapades (I love that word) but we'll give them a break. Next on the list is FemShep and Samantha Traynor, because let's face it, they're pretty hot. I'm mostly going for lesbian couplings in this story because there's not a whole lot of them in the source material. But, there may be some Male/Female and Male/Male down the track, but don't get your hopes up.