Swim Club: Brother's Always Right (F2M TG, AP)

A young athlete drags his little sister down to the pool, and inadvertently turns her into the Swim Club's newest member, and his equally handsome twin.


"But it'll be good for you!"

"No thank you!" said Lucie, and she turned back to her screen.

"Aw, don't be like that, mei-mei," her brother said. "Don't you remember what fun we used to have?"

Mei-mei. That meant 'little sister' in Chinese. It was a word Mike had affectionately called her by ever since she was a baby. Their mom hadn't taught Lucie any Chinese because she wanted her daughter to integrate, so she'd mostly just referred to her brother as 'Micah'.

Despite the eight-year age gap, they always made time for activities together - cooking, watching their favorite TV shows, and even the occasional video game - but it didn't feel right that he was asking Lucie to play a sport with him, as if that was something they'd always done. Sure, Lucie had been to the aquatics center maybe once in the last three years, two times at most.

"C'mon, I was only joking when I said I'd make you play on the water polo team,"

"Good," said Lucie. "Because you know I'm not good at water polo anyway."

"The only reason you're no good is because you never exercise," said Micah. "Besides, you know your brother's always right."

Lucie had to roll her eyes at this. "Well, let's just see about that when we go to the pool and I lose."

"So you'll agree to go with me?" he asked. "Because I'm about to go now and I'm not allowed to leave you alone in the house."

She sighed. There was really no way to get out of this.

"Fiiiine," she said, defeated. "I'll go."

-

While they were in the car, Mike explained how Shaun's training regimen was paying off. Lucie didn't reply, because she knew this was the very reason why Mike no longer paid any attention to her. As brother and sister, they'd always been close and had such similar interests. But ever since he joined the Swim Club he'd been spending more and more time training with his friends, and hardly any time with Lucie.

"We really should have walked," Micah said to break the silence. "It's a beautiful day today. A walk like this would have done us good."

"But I'm getting exercise already! Why do I have to walk as well?" Lucie moaned.

At that, Mike seemed dismayed. He even sighed a little.

"That's alright, mei-mei. But you know, exercise doesn't have to be a chore. It can be fun, something that you really look forward to."

Lucie grimaced from the back seat.

"I'm never gonna like it. So quit forcing me, okay?"

"Alright," said Micah. "It's a shame though. You were always so good at jumping around in the water when you were little. I'm sure you would have made an excellent goalie."

Lucie was silent.

"Fine. Be that way. But you'll feel better when we get there."

-

When they arrived, the gym building looked different from how Lucie remembered it. Had they remodeled it since the last time she was here. Actually, she was pretty sure it always been that way.

"Oh no," she said, as they left the car.

"What?"

"I forgot my bag. My swim bag!"

Micah understood very well that she couldn't go swimming without it.

"That was so stupid," she added. "Now it looks like I came all this way for nothing!"

Lucie was secretly quite glad for an excuse not to get in the cold pool water. But just as she was mentally preparing herself to spend the next two hours in the cafe, Micah reached down and triumphantly said:

"I got it!"

Then he pulled out Lucie's bag out from the trunk, alongside his own, like he'd put it there for her or something.

Looked like she'd have to go swimming after all then.

-

Mike signed in with his gym card. The clerk also gave Lucie a free 7-day Experience Pass, though of course she didn't want it.

They stopped at the doors to the changing rooms. Girls' cubicles were behind one door, and the boys' behind another.

Mike patted his little sister affectionately on the head.

"You alright getting changed by yourself, mei-mei?"

"I'm not five."

"Just checking."

They went their separate ways and just as Lucie was just about to push the door to the female changing room, Mike called out behind her.

"Listen, I know you're not looking forward to this but, just try to enjoy it, okay?"

"Ohh-kay," said Lucie through gritted teeth.

"And hey, since there's still a spot on the team. Are you're quite sure you don't wanna be goalie...?"

"Very sure!" said Lucie.

"Ah well, you'll feel better once you get your gear on."

Lucie didn't respond. She had already marched off quite a way without him.

Why did Mike think this was a good idea anyway? She'd prove him wrong by getting into the pool, then showing him how much she hated it and that she just wanted to leave. He'd get the point after that.

When she got in the cubicle, Lucie threw down her bag and removed her shirt and vest, closely followed by her jeans. She was still wearing her underwear, and reached inside the bag to retrieve her swim costume. But instead of her own bikini bottoms, she found her brother's swim shorts instead.

What was going on? Those weren't hers, but they were obviously in her bag; it had her badges and everything. It even contained her favorite pink towel.

Lucie sighed. She might as well find Mike and tell him she'd taken the wrong swimwear, but he'd probably think she was making excuses again. And besides, he was in the boys' changing room now. In order to find him, she'd need to put her own clothes back on, wander around a building she didn't know her way around and go into a room that smelt of men's deodorant. Best just to stay put for now.

Lucie stared a while at the red swim trunks, wondering when Micah would knock on the door to ask for them back. She sat there for a full minute, waiting for something to happen, but nothing did. If she was going to get out of this, she thought, she might as well do it herself.

It occurred to her that she could just wear Mike's shorts instead of her own. He couldn't really complain about it, because he was the one who wanted her to go swimming. And this was indeed the gear he'd given her. Hesitantly, she took off her underpants, folded them, and slid the swim shorts up and over her hips.

They felt wet, as if Mike hadn't dried them properly, but Lucie decided just to ignore it. 'Man up and power through', she told herself, which sounded like something Mike would say.

There were acres of spare fabric between her legs, but they were a surprisingly tight fit around her waist. Mike's butt must have been smaller than she expected, or maybe she was just growing.

Next she searched the entire bag for her bikini top, but couldn't find it in there either.

"Hrm..."

She was really starting to get annoyed about this. That was when she had another bright idea. She could go out there in Micah's shorts, and not put anything at all on her top half. Her breasts hadn't grown in yet, and her chest looked like that of a boy, so passing as one wasn't out of the question. It was a crazy idea, the thought of it really excited her. And the longer she stood here in Micah's costume, the more she found herself wanting to do it.

The only real giveaway would be her long black hair, which she couldn't exactly get rid of. But of course, she could hide it inside her swimming hat. That way no one would recognize her. Rummaging in the bag once more, she pulled out a red swim cap, which appeared to be one that was designed for water polo. It had flaps on the sides of the head, and hard plastic cups to cover the ears. It was mostly made of a stretchy, waterproof fabric, with a big number 1 on either side.

Lucie tied it up tightly with the string under her chin, then stuffed every loose black strand of her hair inside it. Then she stood proudly, like a boy, and thrust out her chest. She looked the part, so it was time to start acting like one.

She stifled a burp, which made her giggle. No, wait. Boys weren't supposed to laugh like that. She tried out a more masculine laugh, one that seemed to reverberate from the belly. Much better, she thought.

It made her a little nervous to walk around in the female part of the changing room, and tiptoed through without anyone noticing. With each further step however, she felt a cramping pain in both her legs, not unlike the growing pains she usually experienced before bedtimes.

Lucie reached the shower area which, thank goodness, was unisex. And she vaguely noticed that she was playing the part so well, her way of walking had shifted into a lumbering masculine gait. Perhaps it was to compensate for her lack of balance on account of being so tall. No, that wasn't right. How had she gotten so much taller so quickly? She knew she was overdue for a growth spurt, but she didn't know it would happen like this.

She decided to put the bag into a locker before taking a shower when, much to her surprise, Lucie found she could reach the top row with little effort, something she'd never been able to do before.

Before putting the bag away, she rummaged inside it for a quarter. There she found the Experience Pass they had given her earlier. No wait, that was her brother's Gold Membership card. So how did it get there? It must have been her brother's though, as it had his photo. She shrugged, deciding to deal with it later, and tossed it back in the back without looking at the name.

Turning around, she saw on the floor of the shower area, someone had left a black plastic bottle with a label that read Manwash™. It appeared to be some kind of shower gel.

That looked like the sort of thing she wanted to use. The idea of washing herself in a men's formula made her feel mischievous, but also grown-up and strong. Whomever had left it there surely wouldn't mind if she took a little. So she picked up the bottle and squirted the shiny green liquid into her palm. The fresh, tangy aroma went straight to her brain. It smelt like her brother did when he hugged her after taking a shower. Lucie wanted to smell like that too.

She leaned her shoulder against the faucet, and the warm water hit her back. It was refreshingly warm, even though it brought shivering sensations to the rest of her body. She stretched herself out underneath the shower, letting it all soak in.

Her legs at once began to stiffen, but it was probably just the shock of the heat. Ignoring the cramps, she lathered herself up and down with the pungent green gel, rubbing it into every accessible crevice of her long, tender body, from the lowest length of her legs to the domes of her armpits, which she found had recently started to grow hair.

Before she could stop to think if she'd ever noticed this before, Lucie felt a dull aching sensation in her nipples. She couldn't believe it, as before her very eyes, they began to grow bigger and rounder. Lucie nearly covered them up out of shame, feeling stupid for not wearing a bikini top on today of all days. But soon the growth slowed down, and Lucie realized that they were not breasts. They were her pectoral muscles. Getting a bigger chest was just a natural part of growing up, and nothing to be ashamed of. It was something to flaunt rather than hide. Either way, they became a bit less noticeable in the next few moments as the growth in the rest of her body began catch up.

Lucie couldn't believe she had the luck to be growing this fast. At this rate, she'd catch up with Mike. Her entire torso was bulking up, filling out her lithe figure into something a bit more apt for an athlete. She became broader at the shoulders and pleasingly chunky at the waist. As the changes propagated below her waistline, she saw her legs maturing into peak physical form, as though trained by years of doing eggbeater kicks.

Lucie arched her back and allowed the water to cascade from her already spacious torso. Before she knew it, a six-pack had formed in her stomach, which continued to grow longer and broader. She could feel it in her bones. Even her butt was gaining muscle mass.

Soon the growth in her legs and trunk began to slow down. They were about as long now as they were ever going to get, bringing her a final height to well over six feet. The growth in her arms was catching up, and Lucie could feel the blood flow into them, pumping up her biceps and stiffening her shoulders with every heartbeat.

Lucie flexed her hands as they grew from tiny girls' hands into their full adult size.

A soft moan came from the back of her throat as her voice deepened, cracking into new and unexplored pitches. Her neck grew wider, and an Adam's apple peeked out from below her jawline. She would later find talking with this voice came completely naturally to her.

She didn't even realize it, but her face had matured significantly in the last few minutes as well. Her jawline was squarer and meaner looking. It subtly changed the appearance of Lucie from girl, to boy, to man. She ran her hand experimentally over the stubble on her chin, daring herself to believe this was her jaw, her face. But it was no lie. Her body was amazing, and she deserved a place in the swim club. Lucie could only imagine what she might become with more training.

Then, forgetting why she had initially put it on, Lucie took off the swimming cap and rubbed a squirt of shower gel into her short hair. After standing it up in thick black tufts, she gave it a rinse and moved aside to let someone else use the shower.

While leaving the shower area, she caught sight of her reflection in a stainless steel hand dryer, and almost didn't recognize himself. For some reason, the young man was surprised by his appearance, as if he thought he might see a little kid with shoulder-length hair looking back at him. But he hadn't grown it out like that since grade school. Luca let out a smile, and ran a hand through his bangs which were just the perfect length now. Then he pulled his cap back on and headed for the pool.

Just then he realized he had forgotten something, and went back to his locker to fetch it. He unclipped the key, idly scratching his pubic area which had itched ever since he'd begun to grow hair there. In one swift movement, he shut the locker door, locked it again, and slung his favorite pink towel over his shoulder, whistling as he went. He didn't so much care for it being a 'feminine' color. As far as he was concerned, he made it look manly.

Luca wondered where his twin brother had gotten to when he paced along the poolside to find him. Mike was always the crowd-pleaser in his trunks, but Luca turned quite a few heads now with his sculpted chest and goalkeeper's cap.

Mike was standing by the water goal, wearing an identical pair of trunks to him. The cap on his head was a different color, and sporting a big number 3. That was because only the goalkeeper was allowed to wear the red one, obviously. It made Luca feel important, like he was really part of the team now.

"Looking good, di-di!" said Mike, grinning at his twin.

Di-di. That meant 'little brother' in Chinese. Even though Mike was only a few minutes older than him, he'd affectionately referred to Luca like that ever since they were babies. As they had grown up, he'd always felt a protective instinct for his di-di. How great it was that they were finally on a team together.

"Well, we are identical," said Luca, with a saucy grin.

That much was true, but while they had always had the same height and facial structure, Mike usually styled his bangs differently, and was just a little bit more muscled. With enough training however, Luca could easily get to be just as big as his brother. Other than that, they had nearly identical bodies. The only other hair on them was the light fluff on their lower legs, some thick bristles in their underarms, and a wispy treasure trail leading down from their belly buttons.

"Heh, stop that," said Mike, throwing a friendly punch at Luca's chest. "You know I'm clearly the more handsome one."

And they laughed together.

"Oh and by the way," said Luca, looking slightly embarrassed. "Just... thanks."

"Thanks? For what?"

"For bringing me here."

At that Mike hugged his brother, stepped back and gave him his 'I told you so' look.

"Well di-di, I told you you'd like it when you got in the pool."

"But I haven't gotten in yet."

"Let's fix that, shall we?"

"Ohh-kay!"

Before diving in, Luca cast his eyes across the pool, past the water goal, over where the girls' team were practicing, and beyond. This was his domain now, and he couldn't be any happier for it.

As much as he hated to admit it, his brother was always right.


Originally posted to DeviantArt on December 6, 2017. Its description there was as follows:

Wow! I did not expect at all when I published a male-to-female and a female-to-male story on DeviantArt, against all odds, the F2M one would be more popular. Yes, it is thanks to your wonderful feedback that I will be focusing on the Swim Club a lot more in my stories for the future, which means commissioning illustration sequences from time to time when it's not too expensive. Next one will be a prequel to this, which focuses on how Micah became the older brother.

Images by ThatFreakGivz (https://www.deviantart.com/thatfreakgivz).

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