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Through the darkness of its hiding place inside the human, the slug sensed its target. It surged forward, feeling the comfortable warmth behind and into the cold uncertainty of the outside world. Thankfully, it did not have far to go. It could sense more warmth ahead, inviting warmth this time. The defenseless target put up no resistance, immobilized as it was by the slug’s ally. It closed in with speed, sliding quickly over to the waiting opening. Immediately upon poking its head inside, it could feel the host begin to react. But it was too late. It pushed further in, its entire slick body slithering into the equally slick opening. The walls closed in behind it, surrounding the infiltrator again with the comfortable feeling of a host.

Yes, the host. It needed to be possessed. The slug could feel its biological imperative still unfulfilled. It traveled only a little further inside, just far enough to find a safe place to begin. It started the process, reaching out with its mind, seizing control of its surroundings…

The bizarre feeling of regaining senses flooded the slug: sound, smell, sight, taste… The slug became aware it was breathing, hot air traveling in and out of its mouth, its chest heaving. It became aware of other feelings too. The feeling of a human orgasm winding down, of pleasure emanating from the pussy lips it realized it had just wormed inside.

The slug used its new human muscles to move its new human body and sit up. It brushed aside a strand of red hair in its eyes, and caught a glimpse of another human opposite it, masturbating with glee. It suddenly recognized the human, tapping into its hosts memories as easily as ever.

“Brie.” The slug said, testing out its new human voice. “I never knew you were into girls.”

“Never knew you were either... Lucy.” Brie replied, grinning deviously.

“I suppose the chemicals we secrete are natural aphrodisiacs to these humans.” Lucy noted, remembering how she had been seduced. “She got so horny for you after you stuck those fingers in her mouth.” Lucy was still horny. The feeling of natural sexual arousal was a novel one to the infiltrator, and it was a blissful sensation. Lucy’s pussy was absolutely wet, and not just with the natural slug-slime.

“It’s… aah… incredible, isn’t it?” Brie asked, continuing to finger herself. “Like we’re MEANT to be in these bodies. If it weren’t for the mission, I’d do nothing but spread into every single one of them and just… mmm… fuck all day…”

The prospect of spreading into more humans turned on Lucy even more. She leaned forward to Brie. “Let me help you with that.” She volunteered, bringing her hand over to Brie’s soaked nethers. The brunette withdrew her own fingers, welcoming the equally possessed redhead to restart what they had been doing before an alien slid out of her. Lucy felt the woman’s love juices on her digits, feeling the warm flesh inside her from a brand new perspective. The minutes stretched on, with Lucy drilling into Brie as the brunette groped her supple body and moaned. She met a climax, squealing as she came loudly to her lesbian lover’s touch.

“God, that never gets old.” Brie panted, wiping a bead of sweat from her brow. She looked to Lucy, smiling as she never had before. The redhead bore a new expression, an insidious, conspiratorial one. One that Brie shared.

A day and three orgasms later, Lucy sat by the pool of her family house, posing as she took a picture of herself with her phone. The redhead and Brie had parted ways, with the goal being for the new Lucy to return home and learn what she could to advance their infiltration. So she did, driving back to the mansion she lived in and taking back up the role of the bitchy, spoiled heiress.

And what a role it was. Slugs had taken many forms in their duties to the Empire, including military officials, royalty, and many more. But playing the part of a human brat was actually fun. She’d spent all morning trapsing around the house, trying on Lucy’s many different outfits, and casually insulting the staff of the house. To the poor, put-upon servants, this was nothing new.

She took another picture, making sure to include her ample breasts in the frame. She hadn’t yet gotten tired of her host body. If anything, she’d only learned to appreciate the wondrous curves and firm muscles more. She uploaded the pictures to her social media. The old Lucy usually posted about four photos of herself, and often her cleavage, per day. It was important to keep up appearances in that regard.

“Miss Lucy! Miss Lucy!” A maid came up, attempting to get her attention.

Internally Lucy was grinning, excited to slip back into the part. Externally, she rolled her eyes. “What the fuck is it?” She groaned. “Can’t you see I’m busy?” She took a sip of the drink on the table next to her.

The servant gave a barely repressed frown. “Mr. Anderson is home.” She said flatly.

“Fucking finally.” Lucy stood from her pool chair, breezing past the underpaid employee without a hint of thanks. She walked off into the elegant house, not bothering to cover up as she did so.

Strutting through the house, Lucy went straight to the one place she could usually find her father: his office. When Senator Carmine Anderson couldn’t be found on the campaign trail, or in the halls of the capital, he was usually here. And he was usually working, in part to avoid his needy, spoiled daughter. It didn’t always work. Lucy almost always had something to complain about, or ask him for, and she didn’t always care who he was talking to. Now, the creature piloting her body made straight for the door, but instead of bursting in, she stopped, slowly creaked the door open, and listened.

“Y’know, I thought I’d heard everything, but goddamn aliens?” Carmine’s voice sounded through the crack in the door. “What the hell are those guys at NASA smoking, anyway?”

“It’s not just NASA.” A voice came through the speaker phone in the office. “The Air **** reported a likely non-natural meteor. Nothing confirmed yet, but that’s the rumor anyway.”

“Well, we can’t tell the public, that’s for sure.” Lucy’s father responded. “Last thing we need is a damn alien invasion panic going into an election year. Not that it’s real, anyway.”

“So they detected the ship landing.” Lucy thought to herself. “Maybe these humans are only a little smarter than we thought.” That was something to tell the others, just as soon as she had the opportunity.

Suddenly a dark shape stood in front of the cracked door, flinging it open. “Hey!” The security guard inside the room grunted. “What are you doing?”

Carmine looked up and rolled his eyes. “I’m gonna put you on hold, my daughter needs something.” He said, pressing a button on his phone. “Yes, what is it honey?”

Lucy thought fast. “Daddy!” She exclaimed. “Brie showed me this new car her mom bought her, and now I want one!” She gave her best puppy-dog eyes.

Carmine rolled his eyes again. “Sweetie, for the last time, we can only buy so many cars. This is taxpayer money I give you!”

The redhead pouted and crossed her arms. “But I waaaant one! This is so unfair!”

The senator had no time for his spoiled brat today. “Jack, get her out of here, please.”

“Yes, sir.” The youngish guard complied, gently pushing Lucy back out into the hall and closing the door behind him. The senator leaned back in his chair and breathed a sigh of relief, silently cursing his ex-wife for leaving the custody to him.

“Fuck, yes! Yes, right there!” Lucy squealed into her bedsheets five minutes later as Jack grabbed a handful of her red hair and pounded her even harder.

Though the senator didn’t know it, his spoiled daughter had made a habit of seducing several security guards of his these past few years. Jack the most recent of these, had escorted Lucy all the way back to her bedroom, glancing occasionally at her curvaceous form as they walked. Now his pants were around his ankles, and he jackhammered into the bitchy heiress on all fours in front of him. “I wish we could fuck like this all the time.” He grunted between thrusts.

“Ha… That would make Daddy… so angry!” Lucy did her best to stifle the sounds of her orgasm, driven on by her own clear and present ‘daddy issues’. The sight of his secret lover climaxing drove Jack to cum as well, shooting his warm white seed directly into her as he did. They slowed down, coming down from the high.

“Shit, I should probably get back.” Jack panted, quickly putting his softening cock back into his pants.

Lucy wordlessly watched him leave, a satisfied smile on her face. It wasn’t just from being fucked, although that was quite nice. It was also that the infiltrator had played its host’s role so successfully. If being every human was as easy as being Lucy, Earth was going to be a piece of cake. And as she laid on her bed, with a bikini bottom around her ankles and cum seeping out of her pussy, she wondered what to do next. A clone would be ready soon, eager to take a new host like she had. Lucy had other friends—influential friends—but would it be better placed somewhere else?