True to his word, Justin had installed the water tank containing his formula without a hitch.
He didn't see anything wrong with this secret arrangement that both he and Mrs. Fontaine struck. After all, why make a growth formula, designed to turn people into bigger and stronger versions of themselves, without using it. Okay, the girls weren't aware of this plan. But surely none of them would complain. They were in a sports group anyway.
As for the coach herself, Mrs. Fontaine had her own reasons.
The middle-aged woman wanted her team to succeed. Partially out of a desire to see each of them succeed, but also for personal gain. She wanted the glory of training a team filled with volleyball champions. Through her leadership, she would make their school famous for winning the national tournament. And if that dream required involuntary growth among her players, then so be it. Justin's innovation was a godsend considering he promised her that it was no steroid or drug, while also undetectable to any tox screening.
Hence why she eagerly agreed to have him grow the volleyball team. Besides, the girls could use some extra muscle.
And thus the female students entered the locker room without any knowledge of what awaited them.
"Is it just me, or was the coach really intense this time around?"
Another girl added. "Yeah! She's always been strict, but never to this extent before."
Liara Richards, a tall blonde, groaned as she rolled her shoulders. "And then there's the workouts. Ever since the start of this week, we've been hitting the gym as if our lives depend on it. I'm sore all over!"
There was a chorus of agreement among the volleyball players. However, despite the disgruntlement, none planned on doing anything about it. They didn't see the need for it. Instead, they trusted Mrs. Fontaine to have their best interests at heart.
"Fuck, I need a shower. The water had better be warm!"
The first girl to enter the showers was the shortest of the group. She had fair skin, brown eyes, and dark hair that was styled short. The bangs on the right side of her face were longer than those on the left, hiding her eyebrow and almost covering her eye. She was one of the most athletic of the six.
Her name was Ashley Cooper. To some, a decent friend. To many others, however, such as the nerds and geeks of the school, she was a person to be feared. Ashley had the reputation of a jock and a bully, who wasn't afraid of using her above average strength to her advantage.
"I concur." Another player piped up. She moved to join Ashley in the showers. "A warm shower will help relax our muscles. Either that, or a massage."
This one was the second tallest, and also one of the most beautiful. She had long dark hair that pooled down to the back of her waist. Her eyes were blue, yet with a hint of purple, and her figure was curvaceous. Her breasts were perky and bigger than average.
Elisabeth Van Damme. A girl of Dutch descent, and also part of the student council. Someone whose family was quite wealthy. She was a kind, if not reserved and sophisticated girl.
And as those two entered the showers, so did the others who followed suit. They all shed their smelly clothes and entered the communal shower stalls.
There was Emily and Cassandra Aston. Sisters who shared the same hobby. They were also twins, as a matter of fact. They looked very much alike, except that Cassandra had dyed a red streak in her otherwise black hair to make sure people could the difference between the two. They were of average height and size.
Amanda Shirley, who shared Ashley's fit physique, was the last to join them. She had brown hair that was somewhat curly, though those quickly became drenched as she turned on the water.
Water that was mixed with Justin's blue formula.
The female volleyball players were none the wiser as they were doused in growth serum. Luckily, the stuff worked even without ingesting, and could be absorbed through skin contact. It wasn't as effective, nor worked as quickly that way, but it was a suitable way of administering the formula nonetheless.
The mix of H2O and growth serum cascaded down their naked bodies, already doing its job. The girls' bodies slowly became more toned while they showered. It was a subtle process; no one would notice unless they were aware of what was being used on them.
Of course, there were also various results.
Most girls enjoyed minor growth that gave them fitter bodies. Their tummies became completely flat, while four shapely abs took form. Their lean arms took on some mass. What stood out the most were their legs, which thickened somewhat as their thighs expanded and calves became rounder.
Ashley and Amanda benefited the most. It was to be expected, though. They were already quite fit to begin with!
Their muscles gained more definition and size. The gains were thus more noticeable, as their biceps received at least a full inch in circumference. Their chests broadened somewhat, suiting their shoulders that similarly became wider. Instead of a four-pack, both students quickly sported actual six-packs, which looked stunning.
And although these six volleyball players became bigger, the serum also affected them in different ways. More stamina; more strength; a small increase in height. They all got to enjoy these benefits as the diluted blue formula took effect on them.
After their shower, the girls were thoroughly impressed by each other.
"Wow! Amanda, your abs look great. Those sit-ups must be doing wonders for you."
"I think we're all doing great. Our figures are better than ever. Maybe Mrs. Fontaine's new workout regime is not so bad after all?"
"Yeah, if we can get through without collapsing from exhaustion, you mean."
"I don't know. I actually feel great! Like I could go for another training around, in fact!"
"Same here. And my body doesn't feel as sore anymore, thanks to that shower."
By the time everyone was dressed and ready to go, both Justin and the coach were waiting for them at the entrance. They watched keenly as the female students left the building, carrying their bags with stronger and slightly more muscular arms.
The first growth session was a success! Each and every single volleyball player had grown in one way or another, proving that Justin's invention actually worked, without causing any side effects that might have had harmful impacts.
"Well, well. Consider me impressed." The red-haired teacher said, arms crossed over her modest bust. She turned to the younger boy at her side. "I'll admit, I was seriously skeptical about all this. But you delivered as promised."
"Thanks, Mrs. Fontaine. So, uh, does this mean you won't rat me out?"
She chuckled. "A deal is a deal. As long as you help me out, supplying my team and I with your formula, I'll keep your secret. This will be a great partnership, Justin. I can already tell!"