Chapter 4

Story by Velaala on SoFurry

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#5 of Evolution

It's Xenia's turn! Anyone who's seen the pictures of the character shouldn't be too surprised by what's about to happen!

Characters and general idea belong to FA: Railway-Traveller

Story written by myself


It was late into the afternoon by the time Monica's transformation had been completed and stabilized, meaning only a few hours remained for Chris and Xenia to proceed with their own change, as sunlight appeared necessary to trigger the majority of the effects. Without sunlight, something similar to Jackie's original mutation was likely to happen, where the first changes would begin, but only partially. Xenia believed Jackie and Monica's transformations had each taken less than half an hour, however, meaning that she and Chris would have plenty of time to complete their own.

Attempting to contain her anticipation as best as she could, Xenia urged Chris to remove the headpiece from his safety suit and allow the warrior Xenophyll to begin its work. The two taller women tried to help Chris take the last step, but the man appeared very reluctant. Still unsure as to how he would be affected, he tried to ask Xenia for more details, but the scientist did nothing more than share her theory.

She believed the changes which had happened to Jackie and Monica were partly out of everyone's control. Had everything happened as she thought, the worker Xenophyll would have assimilated the DNA of all its victims, which the warrior strand would have absorbed within itself in turn. The changes seemed restricted to a single species, apparently picked at random, as the warrior Xenophyll was likely unable to pick between the most favourable traits of each species. It was pure evolution at work, where many new species would see the world, and the strongest of them would survive.

In simple terms, Chris had no way to know how he himself would be affected by the Xenophyll. Fearing the unknown and the risk of death, Chris shook his head firmly. Jackie began to chuckle softly, finding his hesitation cute, while Monica, who seemed to know him better, was a little more aggressive in her goading. Neither of them was being outright mean, they were simply trying to push him into accepting the inevitable new life, but Chris refused to budge. In an attempt to reassure him, Xenia removed her helmet and told him to watch carefully, as proof that everything would be safe.

With slow but confident steps, Xenia started walking directly into the lake. She opened up more of her environmental suit as she proceeded, in order to allow more of the Xenophyll-infested water to come into contact with her body. As the water reached her waist, she turned around and smiled at the three others, then spread her arms and allowed herself to fall backwards in the water, fully submerged.

None of what was happening below the murky water's surface was visible to Jackie, Monica, and Chris. Their only indication that Xenia was alive and well was the increasingly larger waves forming on the otherwise tranquil lake. The agitation on the surface betrayed how smoothly things changed for Xenia under the water. Ridding herself completely of her protective suit as well as her clothes below, she was free to observe each change directly as it happened, as a manner of speaking.

Xenia gradually began to see through the dark and opaque water as her eyes began to adapt, courtesy of the Xenophyll. The woman's blue eyes changed very slightly in shape and colour. A thin, protective membrane grew over her eyelids, allowing her to see as clearly as a human would with a pair of goggles. Simultaneously, the colour became slightly paler as they adjusted to the underwater darkness, giving her something akin to night vision in water. Had anyone been shining a light onto Xenia in the water, they would have seen the similar reflective shine as seen on cat eyes in the dark.

Breathing was not a problem for very long, as gills quickly developed along Xenia's sides. Moving quickly enough, she was able to bring a hand to her ribs below her arm, in order to feel the skin spread apart into a thin, V-shaped slit. Another of these gills had already formed itself above, and a third soon formed itself below, against her other fingers, leaving a total of six for both sides. As if by instinct, these new organs swelled slightly, only to retract once again, filtering fresh oxygen from the water into Xenia's blood stream. When closed, Xenia's gills were nearly indistinguishable, leaving her skin to appear perfectly smooth and unbroken.

Too captivated by the new gills as well as the other changes happening to her body, it took Xenia a few minutes to realize that her previous form of breathing had never stopped while she was submerged in the water. At the same time as her gills and eyes had changed, her lungs and airways had also adapted slightly, allowing her to draw oxygen from the water into her lungs, as if she continued to breathe normally, using her mouth or nose. In short, she had become even more adept at breathing in the water than outside, while still leaving her original capabilities unchanged.

In fact, Xenia's facial structure had been adapted at the same time, without her noticing. While her nose appeared to be flatter, her entire lower face protruded forward more than before. Her mouth itself as well as the top half of her face remained unchanged, but her nose and mouth formed a somewhat flat, direct surface. Not quite a mammal's muzzle, Xenia's lower face appeared very much like it could belong to some kind of aquatic animal.

It was when Xenia's head surfaced above the lake, instinctively releasing through her gills all the water she had inhaled, that she realized just how far her respiration had changed. It even took her a few seconds to realize that she had kept her feet planted against the lakebed the whole time, and yet she still felt herself being less and less submerged. She had reached a height of eight feet, but showed no signs of stopping as her body continued to adapt itself to the new environment.

By then, Xenia's skin had begun changing hue, taking on a green pigmentation much paler than the lake's dark, gloomy water. The colour had first changed at the center of her body, but slowly spread to cover the limbs as well, until none of her original skin colour remained. While it first appeared as if her skin had taken on a simple, neon green colouration, various markings and subtleties soon began to highlight various parts of Xenia's body, notably her palms and her front. The front of her body, everything from below her eyes to midway down her thighs, soon became a pearly white. This paler tone was focused mainly around the center of her body while leaving the sides green. Along her arms, sides, and legs, the opposite colour appeared in a pattern similar to stripes. Three stripes formed along each arm and side, as well as four stripes for each thigh, wavy lines arranged to cover half the circumference of each limb, in alternation. Along with the different colours covering her body, Xenia's hair shifted to a bright violet, shining in the sun as it grew out to float in the water behind her. Had she not been in the lake, her new hair would have cascaded down far enough to nearly reach her waist.

By the point the new colours had fully settled in, Xenia had grown yet another four feet, bringing her gradually closer to the other two women watching excitedly from the shore. Even Chris seemed to be gaining more confidence as he observed the ease and joy Xenia was going through as her body underwent the changes. Unwilling to exit the water too quickly, Xenia stepped backwards deeper into the lake, until she was once again fully submerged, although she knew her steadily increasing size would mean yet another surfacing.

As Xenia's feet once again dug into the muddy lakebed, the nails above each toe grew out ever so slowly, curling downward until they touched the soil as well. Becoming as dark as obsidian, and just as sharp, they eventually became more like claws. While her fingernails changed in a similar way, her feet's new claws appeared to be more useful for traction when placed on hard ground, whereas the claws on the hands were straight. Without hindering her ability to grip objects, each finger had effectively become tipped with razor sharp knives.

To complement the new weapons her hands had become, Xenia felt a surge in body mass course through her body, like she had observed earlier in Jackie and Monica. Rather than a quick burgeoning of muscle, however, Xenia's growing muscle grew in a more localized way. Seemingly fueled directly by the intake of nutrients through her lungs and gills, it was her chest and abdomen which developed first.

Gradually, but just quickly enough for her to feel the growth with her hands, Xenia felt her abdominal muscles enlarge. As sharp as her claws had become, her skin felt as hard as steel as each finger traced along the grooves being formed. The muscle mass increased to a point where she was able to run a finger from her navel along to her neck bone, perfectly guided by the symmetrical hills of toned flesh along her front. Even though it was out of her reach, the muscles along her back also became stronger, giving a sensation somewhat similar to a rough, well-placed massage.

Despite how hard and muscular her body was becoming, however, Xenia's breasts were undergoing a similar yet opposite change. Seemingly unaffected by the powerful pectoral muscles beneath, the two relatively tiny bumps soon swelled out into much larger orbs which rested on Xenia's chest as if unaffected by gravity. The smooth, soft flesh created quite a contrast with the toned muscles below, water dripping down the shiny white skin. Each breast proved to be surprisingly heavy when cupped by her hands, yet she felt they added no strain on her body. As she stroked her clawed fingers along the soft skin and past her dark, black nipples, shivers ran along the rest of her body.

Before Xenia's abdomen and pectoral muscles had been able to fully develop to their new size, the added might began to appear in her legs. Along her thighs, large powerful lines descended from her hips to her knees, each section of the legs covered by a single, well defined muscle. Xenia's calves went through a similar treatment as well, the wonderful feeling caused by the sudden increase making Xenia's toe claws dig deeper into the ground.

Finally, Xenia's arms soon grew to match the rest of the body. As each bicep, triceps, and deltoid increased slightly, the scientist shifted her arms just enough to put tension in these individual muscles, in order to experiment the feeling of the muscles at each different stage. Curling and opening her hands into fists, a similar thing happened to her forearms as well. Each single movement made the arms move in a different way as the muscles swelled, in a way which was both very familiar and very mysterious at the same time.

With all of her muscles settled in, Xenia felt she appeared much stronger than any bodybuilder she had ever seen before, without even taking into account her new, incomplete height of sixteen feet. Compared to Jackie or Monica, which were both quite incredibly large, Xenia was slightly larger and stronger, emanating an aura of pure power. While the two others' bodies seemed to have gained the muscles somewhat as a side-effect, which made them no less impressive, Xenia's transformation suggested the Xenophyll had intended her to be a creature of strength.

The final changes to occur to Xenia clearly showed the origin of Xenia's power. Leaving her arms and elbows to rest along the surface water, two thin, hard strips of flesh grew out along the back of each of her forearms. An extension of her skeleton which left her other movements unrestrained, the flesh took on the shape of two shark fins pointing towards her elbow. The first, closest to her hand, was about a finger's hand in length, while the second was just slightly shorter. Two similar fins of nearly the same length also appeared on the back of her calves.

The large fin which then grew out from Xenia's spine, in between the silky purple hair, made it abundantly clear which animal the Xenophyll had been inspired from. The length of her forearms, Xenia's new dorsal fin sliced right through the water as her body continued to grow, marked by two of the same black stripes which covered the rest of her green body.

Xenia's transformation into a shark-like being was far from complete. Most iconic of the aquatic predator species, her spine extended itself into a large, green tail with a white underside. The new limb grew out until it was as long as her entire body from head to toe, and as thick as her waist. Covered in many of the black stripes as well, this appendage was very much like an actual shark, complete with a black dorsal fin of its own, as well as two small green pelvic fins, lining the white underside. The green caudal fin at its very tip was shaped like large crescent with what could be considered yet another dorsal fin.

Xenia's changes ended when she had reached a height of twenty feet, towering over the already massive Jackie and Monica. The transformation, which ended with Xenia's ears growing into a large, pointy mammalian form through her purple hair, left her immensely blissful, and somewhat exhausted. She would never have imagined the process to feel as wonderful as it had. With steady steps unhindered by the water, she made her way to the shore, her black-striped ears twitching with excitement as she got used to hearing so many more things at once.

Amazed, Jackie looked up at her former boss with sheer awe. Monica had to restrain herself in order to avoid touching Xenia's new body directly. As for Chris, the man looked up at the women looming over him with slack-jawed fear and wonder. He took hold of his courage as best as he could, and nodded slowly. He wasn't even surprised when the women had heard him, so quiet was his muttering.

"I... I think I'm ready."