The female

The slug had to act quickly. Time was of the essence. As it was in the water below the two humans, it could see that the one with male genitalia was moving away from the female. This presented the perfect opportunity. With great speed, the slug floated forward, between the two paddling legs and to the exposed opening. It was something it had done a thousand times before. It dove headfirst into the slit between the female’s legs, feeling the set of lips part before its slick body.

Almost immediately its felt the human react, attempting to move wildly in another direction. But it was too late. The slug was pushing itself upward, inch by inch. Soon only half of it was outside. Then only a quarter. Then only an eighth. The last tip of it slipped inside, the cool water that surrounded it being replaced by warm flesh.

Now within the human body, the slug began the possession process. It focused itself, feeling its consciousness merge with the host, overriding it and seizing control…

“April! April are you ok?” The slug heard, noise filling its ears. Ears! That meant it had…

The slug opened its new eyes, its vision dominated by the sight of a male human. His face was contorted into one of concern, and the words the slug now understood confirmed this. It immediately scanned the mind of its host, trying to find an excuse for how it had just acted.

“Oh yeah, uh… there was just a fish. I was scared.” The slug stammered, feeling a human voice leave it for the first time. So that was how they communicated.

“Oh. Well, uh, if you’re ok, I’m gonna go back.” The male nodded, turning around and swimming towards the shore.

Now alone, the slug finally had the opportunity to think and scan its host brain. This body was known as April, a woman 24 Earth years of age. She lived in a nation known as the United States, and performed the trade of… marketing consultant. Strange, the slug thought.

The new April examined herself for a moment, looking at her new arms and legs. April thought she was fairly attractive, and the reactions of other humans seemed to confirm this. Though humans wore garments in public, April made every attempt to show off as much skin as possible, and wore her blonde hair in interesting patterns. She had come here to the beach with friends, to drink alcoholic beverages and enjoy companionship. April in particular sought sexual activity with James, the male she had been… ‘skinny dipping’ with seconds earlier. April’s memories told her she had cried out as she felt something violate her pussy.

Pussy… that’s what she called it? April’s fingers lightly traced the spot where the slug had entered her. She shivered a little at the pleasurable sensation that resulted. “So humans have sex for pleasure as well.” It thought. “That’s highly unusual.” And April’s memories confirmed this. She’d had much experience engaging in sexual activity with multiple males. She’d been fucked so many times—

“April! You good?” James called from the shore. The slug realized it was being carried away by April’s memories, particularly the memories of those… unique physical sensations. Perhaps it would have to test some of those sorts of things for itself.

‘April’ finally climbed out of the surf, a confident smile on her face. The invasion had begun.