Alarm bells were silenced underneath a swift slap as Keira lurched awake. She'd measured herself the night before, arm throbbing the whole time from the madness induced injection she took. Six-foot-two, just like she'd been for almost a year, but that could all change now. Kicking off her covers to feel the air on her naked figure, she leapt for the wall where she'd marked her height and snatched the measuring tape off her bedside table. Excitement simmered in her body, ready to boil over at the good news.
"And... not even an inch?" Keira's voice came out as little more than a whisper, stoic in the face of abject failure. Did Roshni give her a placebo? No, then her arm wouldn't hurt the way it did. Must be slow acting, she decided. Or perhaps it'd be like Mia and she'd grow over the course of the day. Confident in the possibility, her tightest clothes adorned her body, ready to tear off if she grew so much as an inch.
Keira still maintained her usual routine before classes. Even if she stood to grow big and powerful like Mia, she couldn't slack off, lest the centaur get too far ahead. As if she wasn't already. That farmhouse was designed for her, and she outgrew it. Even just the short encounter from yesterday told her everything about where she stood in relation to the giantess; just another girl. She shook her head and pushed her legs harder, sprinting around her neighbourhood instead of the usual leisurely jog.
It did the trick. With her muscles subtly throbbing and sweat trickling down her brow, Mia was far from her thoughts, until that moment. She crinkled her nose in displeasure and downed a glass of orange juice. Whatever, she thought. Everyone thought of Mia, it was natural, she was a fucking giant after all with cocks bigger than trucks and boobs that overshadowed the clouds above. How long before she towered above those?
Keira chewed her lip and took a shower. Hot water stripped away all her tension and siphoned down the drain, but it didn't leave serenity, only a foreboding arousal. That fucking centaur... It'd been only a couple days since they screwed, however that was with Annie around, diminishing the whole experience. What would it be like with Mia's undivided attention? With three cocks instead of two, all stretching her like a puny sex toy before filling her like a balloon with enough cum to flood a city? Moans left her as she pushed two fingers into her depths.
The 'incident' made her late, but that proved a cursed blessing as she jogged onto campus. Not a moment later, rumbles shook her stance until she leaned on the main building for support. Her first instinct was to assume an earthquake, but a far more uncommon event made itself known; Mia's arrival. Elegantly stringent legs stepped over the college gates, hooves left imprints in the grass, overlaying those from yesterday, and compelled her to look high. Mia had grown yet again.
Yesterday she dominated the space between land and sky. Now, she became it. Her thickset equine body almost didn't register next to her human torso, the seams of which were blocked by tits greater than buses, nipples protruding through a desperately struggling shirt. Mercifully, her cocks were sheathed for the moment, but that didn't prevent Keira noticing a fine mist wafting from them. As she fully entered the campus, a denser fog followed with the appearance of her mountainous balls.
Other students stopped and stared. From the corner of her eye, she noticed several girls already touching themselves, as she, herself, was also doing. Even if she didn't touch herself, she'd cum just inhaling the sordid fumes. A hand left her breast to brush along her abs, displayed by her crop top. The skin was hot to the touch, not feverish, but warmer, like an open flame. Her kegels clenched on impulse, her belly tensed, and her gazed fused to the subtle swing of Mia's sheath as she walked. No one else had that reaction, most still moved and approached the centaur.
"Here's my number! Call me!"
"We're having a party if you wanna come!"
"My mom and I really want to fuck you!"
No matter how many people crowded her, though, Mia kept moving until she stood before Keira. Did she know just how bad she wanted to fuck? It wasn't even a matter of attraction or mere lust anymore. If none of those dicks impaled her in the next few minutes, it felt as if her womb would burn her from the inside.
"You alright, Keira?" Mia asked, folding her front legs to better look at her tiny friend, which caused her rump to present itself, resting upon her onyx-toned balls, textured like leather with 'small' wrinkles. If Keira wanted, she could scale them with ease.
"Uh, yeah," Keira said, hands at her sides, clenched into fists so tight her nails bit through the skin, "Fine! Why?"
"You looked pretty red. Want me to carry you to the infirmary? It's on the second floor, right?" At her new height, there was no chance Mia meant to carry her through the halls, but rather to deposit her in the infirmary directly via the window. Keira almost swooned, eager for any opportunity to be touched by this hybrid goddess. No! She wouldn't give in so easily. Not like the masses clamouring for Mia's attention and seed.
"No, it's fine. I can make it myself," Keira said briskly and rushed into the building, away from the pheromones that toyed with her mind. She really could use a moment to sit down and cool her head, see if the nurse could at least give her an ice pack or something for her stomach. Even with the musk shut out, it still remained in her nostrils, like pollen clinging to them. She wiped at her nose without result.
The walk to the infirmary felt like trudging through tar. Every time she glanced outside, she saw nothing but Mia, the other students mere blots on a backdrop to the centaur. Just glimpsing a hoof made her fever worse. Eventually, she reached the empty nurses station and took a bed, drew the curtains and laid down. It wasn't just her abdomen that was hot now, no matter where she touched, she was burning up. At least the sheets and pillows were cool on her skin for a moment, before they heated up with her.
"Oh god," Keira groaned as a boiling sensation burgeoned in her crotch. Was she really so desperate for Mia to fuck her? Such thoughts only made it worse. There was no denying it. Her womb screeched at her for centaur cum to fill it. She wanted Mia to fuck her until they both passed out, not a second shorter, and keep going until the whole world imploded on itself, leaving just them to fuck into oblivion. This time, when her hands touched her tits, she didn't stop them. Rather, she welcomed the infinitesimal pleasure. After all, nothing compared to when Mia was inside her.
