Disclaimer: I do not own Prince of Tennis.

Author's note: This is merely an experiment, really. I'm quite excited to see how this story will play out. Opinions and critique are welcome!

Before you recoil and click the back button, please note that this is by no means incest. It's just...unhealthy obsession.


x- o1: The Brother Complex -x


A young girl, roughly the age of ten, groaned as she stared down at her unfinished homework, glancing nervously at the clock hanging from the wall at the front of her classroom with disdain; time seemed to speed up by the second.

She had forgotten that today was the day that her unfinished Science homework was due. Her russet orbs narrowed in both concentration and anxiety as she attempted to finish off the last of her homework before class started, eyes glaring through her wire-framed glasses.

"Oi, Tezuka. You don't look so good." A classmate observed, raising a brow at her current state. The girl was a bundle of nerves as she ran a hand through her already wind-swept coffee-blonde hair, making it more ruffled in appearance.

The young 5th grader promptly ignored the boy, relentless in her attempt to escape trouble.

'Ugh, what would onii-chan say...' she mentally whimpered, dreading the disappointment that her brother would most definitely feel if he ever found out about the situation she had landed herself in. Feeling that that would have been very much a tragedy indeed, she quickly sped up her pace, randomly circling the answers to some multiple-choice questions.

Although she would never ever regret doing so, perhaps, she had been a little too quick in saying 'yes' to her beloved older brother when he had offered to take her out to play yesterday afternoon, completely dismissing the homework she had left piled onto her desk.

In addition, as if to add salt to the wound, as wondrous and absolutely fantastic the afternoon had been, the game they had played was Tennis- her absolutely loathed enemy.

Gripping her pencil tightly, Tezuka Kunihime seethed in unconcealed rage.

Tennis, the young girl decided, was her worst rival ever.

She didn't exactly hate it per se... Of course not. How could she ever hate something her onii-chan loved so much? The idea was just preposterous!

After all, her motto was: 'Whatever onii-chan liked, she would like too.' and thus naturally, that applied to the situation at hand.

So, without a doubt, she had to at least like the stupi- stupendously wonderful sport.

Never mind how much time and effort onii-chan spent practicing it.

Don't think too much about how much dedication he puts into either!

And no matter how much more he seemed to love it in comparison to spending time with herse-

SNAP!

"Oi, Tezuka. I think you broke your pencil."


Tezuka Kunimitsu sighed quietly as he gathered his things for the day. It had been a long and hectic one, with Kikumaru forgetting his homework and causing a great fuss about it with the teacher. In addition to that, he had been assigned to tutor the students who were falling behind in class during lunch breaks- a very taxing task indeed.

He mentally cringed, Kikumaru had been a part of that group too.

Grabbing his bag, he moved to step out of the classroom to head for tennis practice, before belatedly realising that club activities had been suspended for the day due to maintenance work being done on the courts.

'I guess I'll just go home and finish my homework.' The young boy decided, making a swift turn down the hallway while simultaneously avoiding the crowding herd of people.

Most of the second and third year students seemed to tower over him in comparison, but Tezuka didn't mind it. He was still growing, he reminded himself, and would most likely catch up to his senpai's height in time.

"Tezuka-kun! Wait up!"

Tezuka turned slightly to wait for his friend.

"Oishi." He acknowledged, casting a questioning glance at his fellow first year. It was a boy with kind gray eyes and black hair. The boy's hair style was unusual, as it was shaved cleanly at the bottom of his head but remained bushy and unkempt at the top.

"Let's walk home together. There isn't any club today, right?" Oishi asked in a friendly tone as he smiled pleasantly.

Tezuka nodded in compliance, seeing no harm in doing so.

"Sure."


Tezuka Kunihime shuffled her feet nervously as she waited for her brother beside the large school gate, watching carefully as the older students filed out of the school building. Indeed, she was not entirely comfortable with such a 'grown-up' place.

Some of the passing Seishun Gakuen students cast her curious looks, questioning her unusual presence there, while the rest ignored her existence entirely.

Gripping the straps of her little red backpack tightly in her hands, her russet orbs focused on the new wave of students exiting the building, sincerely hoping that one of them would be her brother.

Her eyes immediately lit up with unbridled joy as she spotted a familiar figure, wasting no time in moving to greet him, a bounce to her usually sedate pace.

"Onii-chan!" the little girl called, making sure to use just the right amount of volume. Of course, like any good little sister, she was fully aware that her dear older brother did not appreciate loud noises or hyperactive behaviour- it was the decorum that both Tezuka siblings had been raised with.

Much to her relief, Tezuka heard her call.

Turning his attention from the companion he had been conversing with, a surprised expression made its way onto his face as his eyes met a familiar figure clad in a Seiharu Daiichi Elementary uniform.

"Kunihime?"


Oishi was slightly stumped at the appearance of the person before him

It was a short girl, quite a bit more than a head shorter than himself. She wore a white collared shirt, its collar done up with a dark blue bow, an emerald green blazer and a black school chequered skirt along with white, knee-high socks and a matching pair of black loafers.

What caught Oishi's attention though, was that she had shoulder-length coffee blonde hair and dark russet orbs hidden by a pair of silver wire-framed glasses, not unlike his companion beside him.

Oishi had to blink a few times to make sure. The resemblance was startling, and the boy could have sworn that the girl was Tezuka's little sist-

"Wait, 'onii-chan'?"


Tezuka Kunihime eyed the stranger suspiciously, narrowing her eyes as she observed the older boy in front of her.

He was exactly four and a half centimetres too close to onii-chan, which was an absolute sin in her books.

"Kunihime," Her brother's lovely voice cut through her thoughts, interrupting the plans she had been crafting to make his new companion stay away,"What are you doing here?"

If it were any other nameless and unimportant person, she would have given them a glare worthy of the Tezuka family name-it was rude to interrupt someone, or so she had been taught.

Alas! This was her lovely older brother and Kunihime would rather die than behave in a fashion remotely negative with him.

"N-Nothing onii-chan!" The young girl replied quickly, quickly giving Oishi a suspicious glance before turning her eyes up to meet her brother.

She melted, right then and there, as her eyes met with his, never mind that they technically mirrored her own. This was onii-chan. HER onii-chan that she hadn't seen in exactly eight hours, forty-four minutes and twenty-seven seconds.

Seeing that he was still gracing her with a questioning look, she jumped to reply.

"I-I was just wondering if I could walk home with you, since you said that tennis practice was cancelled today..." She stated timidly, wringing her hands in her school blazer and transforming into the the image of a shy little schoolgirl.

Naturally, her older brother nodded.


Oishi faltered slightly mid-smile as the trio slowly made their way home. The setting sun illuminated the path they trudged upon with a warm orange glow as the river beside it glistened with aqueous movement.

The girl was scary, Oishi decided.

Though most people would not blame him, being on the receiving end of such a harsh glare would make anyone recoil, even if it was from a girl who was two years his junior.

Her expressions were quite comical, as she desperately tried to glare a hole into his head while simultaneously staring adoringly at her older brother. It was quite funny watching her attempt to alternate between the two emotions so expressively.

Deciding he could take the awkward silence no longer, the first year boy spoke up.

"So, Tezuka-kun... You have a sister..?" He attempted, feeling just the slightest bit mean for purposefully excluding the younger girl from the conversation.

Though, to his credit, it was pretty hard to start a conversation with her when she was attempting so vehemently to literally murder him with a look.

"Ah." Tezuka nodded, casting a glance at his younger sister, "Kunihime, introduce yourself."

The effect was immediate, and Oishi almost tripped in surprise.

"My name is Tezuka Kunihime, nice to meet you." The girl's lips formed a serene smile that seemed to glow on her face, her expression radiating friendliness.

He almost thought that the glares he had received since they had started their trek home were mere figments of his imagination.

"A-Ah. Nice to meet you too, T-Tezuka-chan. My name's Oishi Syuichirou, I'm your brother's classmate." The boy managed to introduce himself, still unsure of the new character before him; the sudden personality change was disconcerting indeed.

"It's fine if you address me as Kunihime, Oishi-san."

Oishi nodded uncertainly, casting a baffled look at the younger girl, thinking he had misheard.

"It'd be confusing if you knew two Tezukas wouldn't it?" She cheerily said, but with an unmistakable tone of hidden malice.

Oishi involuntarily shivered, casting a wary glance at the young fifth grader walking casually beside her older brother.

Somehow, he got the impression that Tezuka Kunihime didn't like him much.