Watching the sight before him, Tails almost instinctively pressed even harder on the trigger, despite it not making an actual difference. But now his blood was boiling, watching Cream's ass grow bigger and bigger.
Cream kept twerking it, putting on a show that many would kill for. And it was all for Tails. Bigger and bigger her ass grew. Her shorts riding up between her cheeks, looking more like a pair of panties than actual shorts. Yet she didn't show any signs of wanting to stop. "Mmm...looks good, doesn't it?" Cream chuckled with a devious smirk, putting more energy in her booty shaking.
"It does...it really does!"
"Mmm...then keep it coming, babe! Make my ass bigger than Big!" She backed up closer to Tails, still flaunting and shaking her ass like a belly dancer. Somehow, despite how big her ass was getting, she didn't seem to be struggling at all. It was as if her ass was an actual balloon. Though considering she was able to carry around Amy and Big the Cat when she was a child, it stood within reason her strength was incredible. It would likely be a while before she reached a size too big for her.
Tails was eager to find out what size that was. He stepped closer, his finger firmly pressed on the trigger as the ray continued to bombard her booty with the bulging beam. "Those are some strong pants you've got." He said without thinking.
Cream smirked at him. "They sure are! I shop from the best places for sexy ladies like me!" She said as she bent over as far as she could, and kept shaking her ass like there was no tomorrow. "Strong and stretchy enough to hold even the fattest of asses! And I'm willing to see if that claim holds true!" She kept shaking and growing. Each cheek reaching the size of massive fully grown pumpkins. But as she tried to keep it going, her provocative dancing got a little out of hand, and sent her falling backwards on her huge meaty bum. "W-WHOA!" She cried out as she bounced on the ground on her giant bountiful bottom.
"Cream!" Her fall sobered Tails up, as he stopped pressing the trigger to try and help her back up, but to no avail. Her butt continued growing though, as was the case with the last several tests. The growth didn't stop just because the ray did, there was still a lingering effect. "Wow...you're...you're HUGE."
"W-Whoa... I really am!" With her growth slowing down, she finally started to process just how big she actually got. She rubbed her hands over her pillowy soft rear cushions, and blushed. "Oooh. They feel so good!" She said with a moan before spanking her own ass, making it jiggle wildly like jello.
With the ray safely deactivated for now, Tails stepped closer to Cream, looking at her as she continued to rise up by sheer force of butt size. "So...is this big enough?"
"Hmm...Let's see..." Cream got up effortlessly and shook her hips. Her ass bounced and clapped rhythmically. She then started hopping in place, and her ass bounced even more. "Well, I'm still able to move, so there's definitely room for more." She smirked at Tails. "But it'll do for now."
"Hmm," Tails grinned cheekily, and blasted one last quick shot at Cream, causing her to fall off balance and back onto her rear end as each cheek expanded to yoga ball size. "Now it's enough for now."
Cream didn't even seem too shocked that Tails did that to her. In fact, she just gave him a devious smirk. "Oooh, you naughty little fox boy." She then grabbed him by the shoulders and pulled him in for a sweet, passionate kiss.
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Cream finally gets a taste of what size she could reach thanks to Tails. Once again, her desire and motivation to grow is reignited...and now something else is sparking. You can read the full story HERE.
Since the illustrations for the Sonic Girls Expansion series are hard to find, I've decided to post them myself - with permission from the artists of course. This one was drawn by Roga14 on Twitter, whose page you can find HERE. You should go and show some support! Like now!
