Okay, I got a really good challenge from Expi00962. She reviewed the last chapter and wrote: This is the most challenging challenge you've gotten so far? Hm... I think I'll take that as a friendly challenge. No pun intended or anything. Okay... Hm. Hiro and Kisa fluff. And a personality swap. So Hiro is shy and demure, and Kisa is all look-at-me-I'm-cool-and-you're-totally-not-you-loser. Theme... bottled water. And just for grins, cross it over with something. I can assure you, I'm grinning ear to ear. Slightly daunted by this one, I took up the challenge enthusiastically. Oh, and the only mangas I know are pretty much Fruits Basket, Death Note, and Shaman King, so bear with me… Well, puberty is catching up to our young Fruits Basket friends. And all we people who have experienced puberty know that one of the best things about it are those oh so fun relationship killers… MOOD SWINGS!

Kisa Sohma strutted down the streets of the Sohma compound, clad in her leather jacket and combat boots. She shot a disdainful look at anyone who happened to cross her path and made her way swiftly to Hiro's house. Soon she had reached it and wasted no time knocking on the door loudly and repeatedly. Hiro's mother opened it.

"Hi Kisa!" cried Satsuki Sohma, seemingly unfazed by Kisa's unusual appearance.

"Is Hiro here?" asked Kisa curtly. Satsuki beamed at her.

"Yes, he's here!" she giggled. "He seems to be going through some kind of phase right now though…" Kisa just stared haughtily back, and Hiro's mother called for him up the stairs. Hiro's head peeked around the corner.

"Y-yes?" Satsuki smiled at him.

"Kisa's here to see you!" Hiro smiled.

"Really? Kisa's here…to see me?" Kisa tapped her foot impatiently.

"No duh." She grabbed his arm and dragged him out the door. "Come on. Let's go."

"Okay!" he cried cheerfully. Satsuki waved goodbye, then shut the door. She sighed.

"Those kids are so silly sometimes," she mused. "Puberty, probably."

Kisa and Hiro walked together down the street, trying to figure out what to do.

"Should we go to the park?" asked Hiro hopefully.

"Parks are stupid," scoffed Kisa. "There are many other places I'd rather waste my time."

"Oh. Okay." The continued walking for a while, until they came across a brightly colored sign. Hiro gasped in delight.

"Look, Kisa! A bottled water festival, with bottled water from all over the world! Oh, let's go!" Kisa rolled her eyes.

"But that's so DUMB…" she groaned.

"Please?!" Hiro begged.

"Oh, fine," she sighed, resigned. Happily Hiro skipped ahead, with Kisa drudging behind in his wake. When they finally got there, it was bustling (which honestly is surprising, because it's a BOTTELED WATER FESTIVAL). Hiro was having a marvelous time pointing out all the different colorfully packaged bottles from around the world.

As they attempted to get closer to a nearby stand, a small blonde boy smacked righted into Kisa.

"Oh, sorry," said they boy apologetically, brushing himself off.

"Watch where you're going!" snapped Kisa. She turned around and smacked right into a kid with blue spiky hair.

"Hey," he snarled. "He said, sorry." He looked back over Kisa's shoulder. "Are you okay Manta?" The other boy looked nervous.

"Yeah," he said quickly. "It's no big. Just drop it, Horohoro." Kisa smirked.

"Yeah, Horohoro," she said mockingly. "Wouldn't want to get in over your head…or should I say hair?"

"Kisa, maybe you should stop…"muttered Hiro anxiously. Horohoro growled and moved forward, but someone grabbed his shoulder from behind.

"Calm down," said a cheerful looking boy with headphones around his neck. "I'm sure she didn't mean anything by it." Kisa laughed.

"What do you mean by that? You have no idea what I mean, do you? Do you think just because you're older you're the feelings expert or something?"

"Kisa…"

"See Yoh?!" cried Horohoro, gesticulating angrily at Kisa. "The kid's a wise ass!" Kisa smirked.

"You seem heated up. Maybe some water might help?" and before anyone could stop her, she seized a nearby water bottle and flung its contents at him.

"Why you little-!" He grabbed one too, and in his haste to open it accidentally sent it flying all over the big beefy vendor guy nearby.

"You little punks!" he roared, and seized Horohoro by the collar.

"Kisa, let's go," whimpered Hiro.

"But I want to watch this," smirked Kisa as the man unleashed a tirade at him.

"KISA…"

"Oh, okay!" she said, annoyed. "Jeez, you're such a baby sometimes." It was getting late, and the two headed home to bed.

The next day, Hiro knocked on Kisa's door.

"Hey," he said. "Let's go out somewhere."

"Um, okay," said Kisa. They walked along together. Hiro looked at her.

"You were acting really weird yesterday," he said bluntly. "What's up with that?"

"You weren't quite yourself either," said Kisa. "I wonder what that was about…" They turned the corner…and walked strait into a boy with spiky blue hair.

"Hey!" he yelled. "You're that little punk from yesterday!"

"Um…I am?" asked Kisa, nervously.

"Don't play dumb with me, brat," he snarled. "I'd recognize you anywhere!"

"Hey, she said she didn't do it," said Hiro coolly. "Who do you think you are, picking on little girls like that? I could have you arrested for that you know." Horohoro looked at the two, confused.

"But you were…yesterday…I could have sworn…" He shook his head and shrugged. "All this training must be getting to me," he sighed. "Sorry about that." He walked away. Kisa sighed, relived. Hiro groaned.

"I hate puberty." Kisa nodded sympathetically.

"I know," she said. "And just think. We have, like, five more years of this." There was a moment of silence.

"I'm gonna go kill myself," muttered Hiro, who began to walk away.

"No, Hiro!" cried Kisa, and with that, the two cranky and pubescent teenagers disappeared from sight.

…That sucked so bad. Expi00962, you get an award for most challenging challenge ever! I'm sorry it's awful! Well, at least I gave it my best shot. Sorry if you don't know Shaman King well or anything. Like I said, I only know like…3 mangas. Oh well.