“PEW PEW PEW,” said Megan as she ran around the house with her new toy. Megan had sneaked downstairs to see what the big deal was with her brother’s “laboratory” and wasn’t impressed. Some fizzy soda and vitamins, who cares about those? Then she saw it: the coolest looking ray gun she had ever seen. No wonder her brother didn’t want her in there with all of the other cool toys he probably kept down there. He wanted them all to himself. She quickly took the gun before he caught her with his stuff.
She continued running around the house, jumping on couches and diving under tables. She was General Leia, defending the galaxy from the First Order and the evil Kylo Ren. The front door suddenly opened and Megan popped up, forgetting she was under a table. She bashed her head and dropped the gun on the hard floor.
“Hey Megan” said Erin as she greeted her boyfriend’s younger sister, “How’s it going?”
“I’m not Megan, I’m General Leia,” said Megan as she picked the gun up off the ground. She aimed it at Erin, yelling “take that, First Order scum!” as she pulled the trigger repeatedly.
“I hit you in the heart, you’re dead,” Megan explained to Erin as Erin continued to stand there.
“Oh, uh, ugh,” gasped Erin as she sunk to her knees. “Before I die, tell me where your brother is.”
“Downstairs,” said Megan, already bored with her playmate and running off.
“Thank… you,” sighed Erin as she sunk to the floor. She stood up once Megan had left and went downstairs to see her boyfriend. Erin had been out on her morning jog before she came to see her boyfriend, her t-shirt covering her flat chest and stomach while her running shorts hugged her firm butt and thighs. She knocked on the door and Joe invited her into his downstairs lab. Joe greeted Erin, but quickly started looking around the room.
“Lose something?” asked Erin.
“Yeah, an experimental beam projection device,” he said distractedly, “I could’ve sworn I put it over here.”
“I’m going to assume that those you mean ray-gun and then ask if it’s dangerous.”
“No, it’s not dangerous, I’ve never gotten it to… do what it’s meant to do. Wait, did Megan steal it? Is she messing around with it upstairs?”
“No.”
“Good. Don’t want her down-“
“General Leia is using it to kill First Order scum like yours truly. What’s it meant to do?”
“Umm, activate signals in the hypothalamus gland to induce the endocrine system via the pituitary gland to accelerate the release of somatotropin in the subject’s body…” answered Joe embarrassedly, seemingly forgetting about his sister.
“You do know I know that means it’s a growth ray, right?” asked Erin, suddenly interested.
“Yeah, well, it’s never worked… that push-up bra looks great on you,” said Joe, trying to change the subject.
“What? I’m not wearing a push-up – whoa!” exclaimed Erin, looking at her chest. It doesn’t seem like much, but B-cups when you’ve had nothing your entire adult life are an amazing improvement. “Where did these come from?!” she said, finally noticing the mounds under her shirt. Her nipples were pressed against the fabric, more sensitive than they’d ever felt before. She cupped her new endowments and pressed them together, fondling herself and gasping with pleasure at her new physique.
“Wait, you said Megan shot you with the gun, right?” said Joe.
“Yeah,” breathed Erin as she continued to play with her breasts.
“How did she get the gun to-,” he broke off as he heard a creaking from upstairs. “Oh no,” he said, running to the door. As he came closer to his girlfriend, he noticed that not only were her boobs much larger, she was also taller! Around 7 feet tall if he wasn’t mistaken. “Erin, you’re taller, too,” he said hurriedly, “somehow Megan got the gun to work.” He sprinted up the steps, beckoning his girlfriend to follow. She grudgingly stopped playing with herself and followed him up the steps. Erin had always been taller than Joe, but her growth helped her loom over him. When they got to the top of the steps, however, they both stopped, staring at the figure that looked down on them both.
Megan had apparently discovered that the gun was a growth ray and hadn’t been stingy with it. Her prepubescent body towered over both of them, her butt nearly touching the ceiling while she was bent at the waist.
“Hey Joe! Hey Erin!” she boomed, “I’m the big sister now!”
“Megan!” exclaimed Joe, “How did you get the gun to work?! Why did you use it on yourself?!”
“It didn’t work before? That’s good, I thought I broke it when I dropped it. Good thing it never worked.” she answered, “and I didn’t mean to use it on myself. I wanted to see how awesome I looked with the gun, so I went to the big mirror in mom and dad’s room. I did some cool poses and shot the gun at the mirror. The gun felt like it was getting smaller, but I noticed my clothes felt tighter and I looked taller in the mirror and since everyone at school makes fun of me for being short, I decided to be the tallest person at school. Then I remembered that you were still taller than me, so I had to be taller than you so I could be the big sister. Then I remembered Erin and decided to be taller than her. Then I decided that I should be the tallest person in the world and grew even more. I wanted to show you how awesome and huge I am so I crawled through the house to here and here we are!” she rambled happily. “We should get some bigger doors!”
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