You Watanabe and Kanan Matsuura were enjoying a swim around the ocean near their beachside hometown.

"This is great, Kanan~ None of the other girls can keep up with me this well!" You cheerily said to her senpai.

"I'm certainly surprised, I'd figure you'd be so used to swimming in a pool that you wouldn't be able to handle the ocean's ebb and flow."

"Nah, being a competitive swimmer, I've trained in the ocean a lot to make swimming in pools even more of a breeze!" with that statement of confidence, You did her signature "Yousoro!" pose and gave a toothy grin, showing off her perfect smile.

"I love scuba diving, but it is nice just to wear my casual swimsuit for once as well," said Kanan, looking down and admiring how good her blue striped bikini looked on her.

You was sporting her usual skintight competition school swimsuit. It clung to her body and showed off her amazing curves. It was quite the feat that both girls could have such sporty bodies honed by the water, and yet exude very different appeals. Both had figures to die for.

As the sky filled with beautiful shades of red and orange, the girls swam back to shore and walked to Kanan's house nearby.

--

"I'll hop in the bath first, it'll be quick," Kanan said, leaving You alone in her bedroom. You stripped out of her still moist swimsuit and grabbed a fluffy white towel from a pile.

"You'd think being covered in water would prevent your body from sweating as much, but I somehow manage to sweat up a storm every time..." You thought. She took the clean towel and began wiping down her body, starting with her armpits and breasts, eventually working her way to her thick inner thighs, ass, and feet.

"I'm out of the bath! Just gonna grab something to drink from the fridge, you're welcome to jump in!" You heard Kanan's voice from the kitchen downstairs.

"Thanks! I'll be quick as well, just need to let my muscles soak for a bit." You called down the wooden staircase, heading into the bathroom.

Upon entering, You saw a pile of dirty clothes in a hamper presumably belonging to Kanan. She had to admit, her senpai had great taste in underwear. However, something was... alluring about the clothes pile. There was a very discernable scent wafting from the various pieces of clothing that tickled You's nose in a good way. She had never had these kinds of thoughts about a girl other than Chika before, but her curiosity was getting the better of her.

Making sure the coast was clear, You took Kanan's still wet bikini that she had just been wearing and held it in her hands. She had thought that their breast sizes were relatively similar all this time but looking at the bikini top and putting it to her chest, she could easily see Kanan's breasts were slightly larger. The bikini bottoms however showed a clear difference, Kanan's thighs and ass were a good deal larger than You's.

Clenching her first and letting out a sigh of defeat, You was ready to put down the swimsuit and take her bath, but thoughts of Kanan's naked body ran through her mind, and You's privates began to stir. Deciding it was now or never, You quickly took her friend's bikini and pressed it to her nose, inhaling a scented mix of the ocean, Kanan's sweat, and her natural body odor. It smelled wonderful, You thought.

Deciding she needed more, You kissed and licked the used dirty bikini top. She imagined Kanan's large breasts being cradled in these cups. One hand held the clothing while the other was down at You's crotch.

Suddenly a strange tingling feeling overcame You, but it was different than the tingling feeling coming from masturbation. It felt like an electricity was flowing through her, and she began to get dizzy. Putting the swimsuit back into the dirty hamper, You stood silent in the bathroom for a moment. The space around her blurred as the walls grew further away, and You's line of sight became shorter. She groggily walked to the bathroom mirror to see she had clearly shrunk in height!

Originally standing at around 5'1 (157 cm), You estimated she was now no more than 4'7 (140 cm)! Panic set in as You weighed her options. Surely her reliable senpai would know what to do.

Leaving the bathroom still stark naked, You briskly walked back to Kanan's room across the hall. But when she opened the door, what she saw shocked her.


Kanan was fervently sniffing the towel that You had used to wipe her body's sweat with. All while touching herself as well, just as You had done.

You tried to rationalize so much happening at once, all she could get out was "K-Kanan... I--"

"Stop! This... isn't what it looks like... I was just... reusing your towel since I didn't want to dirty another one and.... woah..." Kanan tried to explain as she began to feel dizzy. Putting her hand to her forehead, she sat on her bed dazed and confused, feeling as if the room was enlarging before her eyes.

You watched on in a stunned fascination as Kanan began to shrink before her eyes. From 5'3 (162 cm) to a mere 4'3 (130 cm), an even more drastic reduction in height than she had experienced moments before.

"W-what just happened to me!? You, what's going on!?" Kanan said, deeply embarrassed and confused.

"I... I think we have a lot to talk about, senpai..." You replied calmly.

--

Half an hour later, the two girls sat on Kanan's bed. You had gone back to take her bath, and now they sat huddled up next to each other drinking some hot tea in their pajamas. Their heights had only been restored slightly over the past 30 minutes, each gaining an inch or two at most.

"So, you're saying the reason we shrunk was because... we were affected by each other's sweat?" Kanan said, almost laughing from the absurdity of the situation.

"Yes, err well no... I'm not entirely sure yet. I have a feeling it's not just our sweat. It could be "anything" coming from our bodies potentially," replied You.

"Eww.... that's... kinda gross, in a hot way," Kanan both laughed and cringed at the thought. "I wonder if there's a way we could grow things as well as shrink them."

"...Do you want to try? I'm up for experimenting..." You began to blush before she could finish her thought and turned away to hide her reddened face.

The two girls shared an intimate day together that culminated in an intensely intimate evening. Figuring out how they should proceed with so much new information about each other, they decided...


How should the story continue?

-You and Kanan experiment with each other's size changing abilities in the safety and intimacy of Kanan's room.

-You and Kanan decide to cool off for the night and do some secret size changing experiments tomorrow with the other Aqours members.
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June 1, 2023
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