Yabai Koi Series

A/N: thank you for the reviews, I appreciate it. I kinda did a victory dance each time a review came in. glad you liked the first chapter, because I haven't written in quite a while so I'm afraid I've lost my touch. But anyway, for those who asked, this story is a place where I will post oneshots about Yachi and Oikawa, and some of them won't be related to one another. If there are connecting entries then I'll make sure to tell first. And thanks for reminding me about end notes, I used to do that for my stories but I've kinda forgotten about it for this one.

Disclaimer: Haikyuu! Does not belong to me, nor does yacchan.

Summary: Because according to Kageyama-kun, everything about Oikawa was 'yabai'.

#2: She was just too cute that he couldn't help himself.

He stood by the gates, aware of the stares he was getting from the people around him, mostly women. Of course they were looking, he knew all too well how popular he was with the opposite sex, and he reveled in it. Spending most of his time with a bunch of high school guys from the Volleyball club was one of the reasons for that. Fighting down a potentially big grin on his face, Oikawa stuffed his hands into his pockets as he made his way through Karasuno's School grounds. Festive music blared through speakers, installed at intervals of four stalls apart. Kids were running around, excited to see what the school festival had to offer. Despite him being from a prestigious school, Oikawa was impressed at the amount of people who turned up.

"Oi, TrashyKawa. What took you so long?"

He didn't have to look up from his phone to know who it was. Locking the phone screen, he turned to his friend, who was busily munching away on a plate of Takoyaki.

"Iwa-chan, there you are. I was about to look for you."

Said name swallowed a piece of the treat. "Bet you were more interested in picking up girls."

It was partially true, so Oikawa didn't bother to rephrase it. "Well, I didn't come here to look at guys now did I? What are we doing here anyway?"

The team Captain watched as his friend swallowed up a mouthful of the treat, finishing it off altogether before answering him. "Because you said you were dumped and you didn't have anything better to do."

At this, Oikawa bristled. "Iwa-chan! I wasn't dumped. I told you already, we broke up. Not that we ever really dated ya know."

"Uh huh."

"I tell nothing but the truth."

"Whatever. You still have nothing to do, right? So here we are. And I heard the Karasuno volleyball club is opening a haunted house."

He waved at a pair of girls who were ogling him, and distractedly replied. "Haunted house? Lame."

Despite saying that, he still walked towards the gymnasium with Iwaizumi walking next to him.

"Look out for a girl wearing bunny ears. I heard she's giving out free candy. You can give 'em to Takeru."

He made a noncommittal sound, and hoped that the bunny girl would be cute. They were halfway to the gym when they heard a very familiar voice calling for customers at a stall. Turning their heads, a grin lit up Oikawa's face as he saw Hinata manning a Yakisoba bread stall. The shorter boy pointed a finger at him.

"Ah! What are you doing here, Daiō!"

Oikawa noticed fleetingly that the carrot-head had dropped the –sama suffix, but didn't care either way. He still hated the name.

"Well if it isn't Chibi-chan!"

"It's Hinata!"

"Aren't getting enough customers are we now?"

Iwaizumi thought that it was only right for Hinata to look really annoyed for that.

He raised a brow as he saw a few other props next to the stall. There was a mini photo booth with black drapes and had fake bats hung above a life-size cardboard cutout of some tall dude in a Dracula costume. Some boxes sprayed with black paint were made out to be makeshift tables with jars of fake ears and other edible human anatomies. A tripod holding up a camera was set to stand a couple of meters from the booth. The fake teeth in a jar right next to a glowing skull looked disturbingly real. It was kind of gross, but cool at the same time. He couldn't really decide.

"What are you guys really doing?"

The orange-head who had been fuming at Oikawa seconds ago immediately had his eyes sparkling with the excitement of a toddler with his first tricycle.

"We're using the gym for a haunted house- Ah! Hey, put that back!"

The Seijou's Ace stifled a sigh as he watched his Captain take a Yakisoba bread and held it above and away from Hinata, his other hand pushing at the shorty's forehead. It was at times like this that Iwaizumi could kind of guess the reason that, despite having the brains, looks and talents, Oikawa's previous girlfriends always end up breaking it off with him.

"Are you really a High School senior?"

He was surprised that the flashy setter even had girls still swooning after him.

"Stop that TrashyKawa."

Iwaizumi grabbed the bread from him and put it back in with the other bread piled up before Hinata. "You're not selling yakisoba bread?"

"Oh, this here is a freebie! Buy a ticket to the haunted house or take a picture with Dracula-san there at the booth and you get a Yakisoba bread!"

Oikawa stifled a laugh. He couldn't decide whether to call the idea smart or dumb.

"Oi, Chibi-chan-"

"I told you, it's HI-NA-TA!"

"Yeah, okay. Is the haunted house good?"

Hinata made an offended face. "What do you mean by good? It's friggin' awesome I tell ya. If you don't go now then the guys might just close it off since the waiting line is long."

Tilting his head to one side, Oikawa put a finger to his chin and made a motion as if he was thinking about it.

"Hmm…"

"That was really drawn out ya know. Don't believe me now, do ya?"

The older guy gave a shrug. "Well, I guess I can take a look. C'mon, ticket please."

Grudgingly, Hinata pulled out a small 2x3-inch card with some words and numbers printed on it.

"I don't wanna give you one, but at the same time I really want you to go there since it's awesome."

Iwaizumi picked up a jar of eyes and motioned to the Dracula cardboard cutout.

"Are you guys on break or something? This guy looks like he needs some company."

"We're gonna get more customers after Yachi-san finishes her rounds."

Oikawa was poking at the glowing skull when his ears picked up Yachi's name.

"Say, Chibi-chan-"

"It's Hinata!"

"Speaking about Yacchan-"

"You can't call her that-"

Iwaizumi snorted as he saw Oikawa's brow tick in annoyance. God, how childish can he get?

"Why can't I call her that? It's fitting for a cute girl like her."

Hinata gave him the 'evil eyes', well, as much as he could possibly do with his large bright orbs, and crossed his arms.

"Bet 'cha say that to the other girls."

"That's because all girls are cute."

"And that's why you're the only one who can't call her that. Geez, stop hitting on Yachi-san if you're not serious."

For a moment, Oikawa was silent, and Iwaizumi saw an expression he had not seen his friend show for quite a long time. Hurt. The expression was only there for a few seconds, before the Seijoh's captain put up his mask and flashed a teasing grin.

"Then Hitoka-chan it is~"

"HAA?!"

"You see, when a girl gets called by their given name, they become all sparkly and pretty. But I guess you wouldn't know since you're not popular~"

"HAA?!"

Oikawa was having fun teasing Hinata when a familiar voice spoke up from behind Iwaizumi.

"Hinata, you're gonna scare the customers and Sawamura-san will get angry again."

Both the carrot-head and the setter turned around, and that was when they saw Hitoka Yachi appearing from behind the spiker's tall body. Casually, Iwaizumi greeted her.

"Oh, hey there. Oh? What's this?"

Hinata's face brightened up at the line of new customers trailing behind the girl.

"Welcome! Welcome! You can get your tickets here!"

Oikawa had to move aside when the group of people started crowding the stall, still in a trance the moment he saw Yachi. He had to refrain from rubbing his eyes just to make sure that what he was seeing was real. He didn't know who designed the maid costume with the bunny ears and bob tail she was wearing, but it suited her perfectly. Especially since she was small and had very large eyes. Very pretty and bright eyes. Her star clips were gone, and the headband with the pair of pink bunny ears held her hair back. In the middle of her chest, a black ribbon sat there. A little girl, probably five year old, played with the pink bobtail that was sewn onto the back of the dress, that had sat nicely at the base of her spine. That was when he noticed her skirt. The black and white skirt was short, and her legs were covered with a pair of white thigh high socks. Those socks were always a killer.

So the bunny girl Iwaizumi mentioned was her, out of all people.

He turned his eyes downwards, and when he looked back up, he swallowed.

"Crap, this is bad."

He knew the girl was quite interesting, and he had made an offhanded comment to Iwaizumi before that she was the kind of girl who was cute even without trying to be. And at first, she had just been an acquaintance, someone he knew from another school. Then when he saw that the girl was friends with Kageyama and Hinata he felt intrigued. it was odd yet entertaining to see how the trio looked to be at ease with each other, never mind the occasional squabbles between the two boys. Kindaichi had commented that Yachi was probably the only girl Kageyama was close to, and it had perked his interest in the first-year manager.

Iwaizumi had told him to knock it off that one time, when he had sauntered towards the girl when they visited Karasuno for a friendly match to promote sports in Miyagi. Because it was apparent that Oikawa was trying to get close to the girl just because he wanted to frazzle Kageyama.

But somehow, after some coincidences of bumping into the girl at town, they became a little bit more than acquaintances. Then they became friends of some sort. Then when one day, she was hit on by some guys from Johzenji High School at a fireworks festival, something ticked in Oikawa. She had thanked him for shaking the guys off, and said something about getting separated from Kageyama and Hinata. Somehow the sight of her warmed up his chest and for a moment he had not known what to say, when suddenly a blur of orange and black rushed towards the girl, checking if she was okay.

That was then, and after a few more friendly greetings whenever they happened to be in the same train, he realized that Hitoka Yachi was an oddity in his life that he never thought would have made him feel like the most important guy in the world. But this… and damn if his friend was talking to her so casually too. And there he was, trying not to act like a lovesick person. Isn't this a little bit too much? Did the Man Up There hate him? Was he doing this purposely so that Oikawa would die of overheating?

He nearly jumped a bit as he heard her calling out to him, holding out a small hand brimming with candy. She smiled up at him, her cheeks tinted with pink from the warm sun. Despite the sun, he could feel the hairs at the back of his neck stand up.

"Here, for Takeru-kun."

"Ah, thanks Hitoka-chan."

She appeared to be caught off-guard, since it had been a while for someone to call her by her given name. Then she smiled again, her cheeks warming up a little bit more.

"How can she be this cute? Damn it."

Watching from the sidelines, munching on a piece of candy that Yachi had given him, Iwaizumi thought that it was quite entertaining to see his friend trying to maintain his cool when he obviously looked like some cupid had shot an arrow through his heart. A smirk stretched over his face when Oikawa cleared his throat, and trying to mask the evident adoration in his eyes, he followed up with a smile and a friendly comment that made Yachi smile even more.

The spiker knew the reason why Oikawa broke up with the recent girl he dated not more than three months. Yachi was what happened.

He had overheard the conversation between the girl and his friend behind the gym, and she was saying something about Oikawa being childish and wishy-washy in dating her. When the Captain didn't deny that, the girl then said something that made Oikawa miss his serves one after another during the after-school club practice.

"You're thinking of someone else aren't you, Tōru-kun."

Judging from the way his friend flinched whenever their coach mentioned about practice matches with Karasuno, he knew the girlfriend had been right.

Popping another candy into his mouth, Iwaizumi was brought back to his conversation with his friend just after he realized that he kind-of-sort-of liked the small manager of the Karasuno's Boys' Volleyball team. It was out of the blue, really. When they had been on their way back to Oikawa's house for some studying, the setter had stopped in the middle of the road and said, in a very unsure voice, that he 'thinks he's starting to like Yacchan'. Then he went onto saying that he liked her a lot but she would never really take him seriously since he was THE Tōru Oikawa, the flashy, lady killer Daiō-san. When he started saying that he should date someone to get his mind off her, Iwaizumi was starting to get irritated at his hesitance, and ended up head butting his friend for being so unlike himself.

"Stop bullshitting me. You know that's not true, idiot."

But alas, Oikawa still went and dated a girl for such a stupid excuse. He sighed.

He didn't mind that Oikawa was starting to feel like he was worth some loving, but it was starting to get on his nerves when his friend keeps on holding back on his feelings. It was getting annoying as hell.

"Go and ask her out already, dumbass."

And now he was starting to think like Kageyama.

True to Hinata's words, the Haunted House was actually pretty good. The décor and props looked real, and the monsters and ghosts that popped out made Iwaizumi swear a whole lot throughout the whole fiasco. Oikawa tried keeping his cool, but the moment Karasuno's Ace spiker crawled out of a makeshift well at the end of the pathway, he could swear both him and Iwaizumi shouted out simultaneously. Asahi Azumane could have been scary with just his hair let down.

When they exited the gym, Oikawa spotted Yachi giving out some candy to a group of elementary boys. A group of blushing and giggling elementary boys. When they thanked her, she gave a smile and waved at them as they ran to play somewhere else. When she turned around, his eyes caught her brown ones, and she jogged towards them, the basket of candy she was holding being almost empty. Iwaizumi was already checking out a target-practice booth by the time she reached him, her face beaming.

"How was it? How was the haunted house?"

He grinned. "Pretty good. Whose idea was it?"

She fanned herself with her free hand, her cheeks pink out of both exhaustion and the warm sun. His hand itched to pull out a tissue and wipe the sheen of sweat on her forehead and temples, and instead he stuffed it into his pocket.

"It was Shimizu-senpai's and Sugawara-san's idea. The Yakisoba bread was Kageyama-kun's."

He laughed. "Figures."

Yachi laughed along. "And I'm in charge of promotions. I'm pretty surprised that I managed to pull in customers."

"Why? You did a good job though."

She was picking at a small ribbon sewn onto the skirt and sheepishly giggled. "W-well Shimizu-senpai was supposed to wear this costume, but she's a committee member of this festival so she was busy with rounds. And she didn't want to wear it. Tanaka-senpai and Nishinoya-senpai even went to Akihabara to rent this just so that Shimizu-senpai could wear it."

"You didn't want to wear this?"

At this she laughed again. "We-Well, you see… wouldn't this suit Shimizu-senpai more? I-I mean, I'm not as pretty as her."

Oikawa swept his eyes over her, stopping a heartbeat at her lips. Finally he smiled. "If I hadn't known better, I'd say this was meant for you."

He watched as she looked up at him, surprised. Then she laughed good-naturedly, holding her stomach as she laughed a bit more. She reached up a hand to wipe at a tear that fell down.

"Oikawa-san, you should really work on your pickup lines. But thank you, that was sweet of you."

She grabbed his hand, and put some more candy into his large palm. "There you go, I'm giving you the last ones."

Oikawa could feel his ears turning hot. Did she just think he was joking? He was serious though.

Before she retracted her hand, he quickly grabbed onto it, trapping the candy between their clasped ones. Some of them dug into his skin. But he didn't seem to care.

"But I'm serious. I'm saying that you're pretty, Hitoka-chan."

At this, her cheeks began to color into a pretty blush, and her lips were trying to form words.

"U-Um… O-Okay. Um, th-thank you…"

When they heard Iwaizumi called out to him, Yachi could feel Oikawa's grip loosening slightly.

"U-Um… M-My hand…"

Reluctantly, the setter let go of her small hand, and stuffed his into his pocket. "I really do think you're pretty, Hitoka-chan."

Yachi chanced a look at him, and immediately looked away, her blush deepening. She bit her lip, not knowing what to say, when Iwaizumi came up to lightly punch Oikawa's shoulder.

"Yo, let's go grab the freebie. Oh, Yachi. Thanks for the candy. And the haunted house was hella scary. Good job on that."

She wordlessly nodded and thanked the spiky haired guy, and excused herself from them, hurriedly walking away. Iwaizumi raised a brow as he heard Oikawa sigh, and poked his side.

"What? Did I interrupt something?"

After grabbing a Yakisoba bread –Oikawa had to fight his freebie from Hinata's reluctant hands- they stopped at a few other stalls. They were both sitting at a bench facing the soccer field, where a bouncing castle had been put up for children. Iwaizumi won a couple of tickets to the zoo from a game stall, and had a satisfied look on his face.

"I'm going home. You staying here or not?"

Oikawa cracked his knuckles and watched as a toddler excitedly led his mother towards the bouncing castle.

"I'll stay a little bit longer, I guess."

Iwaizumi stood up from the bench, and watched as his friend stare at nothing in particular. He thought of the way Yachi was acting earlier and knew that something happened between them. Knowing Oikawa, it was probably something the guy said.

"Did you do something stupid again, idiot?"

That got Oikawa's attention. The volleyball captain huffed. "Why is it always my fault? Geez."

His friend rested a hand on his hip and smirked. "You probably scared her with one of your cheesy pickup lines didn't cha?"

He snorted when Oikawa pouted. "You know, if you were honest enough, she would probably believe you."

Oikawa groaned, and threw up his hands in the air. "But I was being serious. She practically ran away from me though."

A smile stretched over the spiker's face. He laughed, and messed up Oikawa's hair. His friend let out a frustrated yell when he did that.

"Why don't you try telling her again? Properly this time."

Standing up, Oikawa tried to smooth out his mussed hair. "What should I do, she'll never take me seriously. She's probably creeped out by me. Iwa-chan, I-"

"I-I wasn't creeped out at all, Oikawa-san."

Both head turned to her as she walked up to them. The basket with candy was no longer with her, and she was nervously bunching the hems of her skirt. Iwaizumi chuckled as he turned to his friend, who looked like he wanted to just run away from the girl and hide somewhere until his embarrassment subsided. He slapped Oikawa's back, surprising the tall guy and gave him a thumbs up before jogging away from the two.

"Be sure not screw up things again, idiot."

Oikawa watched, as his friend's back disappeared from his sight, and turned to the girl standing in front of her. He opened his mouth to say something when he saw a blur of orange and black hurrying towards them from behind Yachi. Not thinking twice, he grabbed her hand and hurriedly pulled her towards the back of a stall selling candied apples. He sighed when both Kageyama and Hinata ran past them, seemingly in a stupid race again.

"Um, where are you taking me, Oikawa-san- Oomph."

He stopped quite suddenly and she crashed into him. Grabbing her shoulders, he pulled her away. He then gave her a smile, one that did not reach his ears.

"Do you know where we can talk privately?"

Yachi rubbed her sore nose, and nodded. Her eyes dropped to his free hands, and swallowed.

"Can I um… hold your hand?"

Oikawa blinked, and he dumbly nodded. A smile broke out on her face and he wished he had wiped his sweaty hands before she grabbed one of them in her small one.

"Then um… over here."

For anyone seeing them, it was odd to see a girl leading a guy with his height by the hand. But the weird looks were the least of his concerns as they arrived at the empty corridors of the third year building. Yachi stopped in front of a class, and turned around to face him.

"So um…. About earlier… I believed you, Oikawa-san."

Said name scratched the back of his head and cleared his throat. "But you ran away. I creeped you out didn't I?"

"No!"

Her voice filled the empty space, and he jumped a bit. She noticed that she had shouted, out of panic, and bit her lip.

"I-I mean, I wasn't creeped out at all. I was just… surprised, is all. I mean, you were always saying that to other girls, and you always tell me I'm cute so flippantly-"

He bristled at that. "Flippant? I was-"

She reached up and covered his mouth with her hands, her cheeks red.

"Well Kageyama-kun always tells me that you're always saying the same thing to girls. And Hinata told me that you just liked to tease people. So I thought that this time, you were just teasing me as usual…"

Yachi felt his hot breath against her hand, and quickly pulled back.

"… so when you suddenly said it so seriously I freaked out. Because I didn't know you really thought of me that way."

It was silent for a few seconds, when Oikawa spoke up matter-of-factly.

"But you are pretty. And cute. I mean it."

Yachi looked up at him, and her cheeks colored again as the sight of his handsome face. He looked embarrassed as he admitted.

"To me you're always cute, and I couldn't tell it to you honestly before because you never took me seriously. It was killing me, seeing you all those times and knowing that if I tell you you're pretty you'll just laugh."

She gasped, and made a ninety degree bow. "I-I'm so sorry!"

Seeing her hunched over figure, Oikawa sighed. He brought up a hand and gently tucked her hair behind an ear.

"But today you just appeared out of nowhere looking so pretty I couldn't help myself. So you're partly to blame for me acting all weird today."

"I'm sorry for appearing out of nowhere."

She looked up and slowly began to smile. He smiled back, and she giggled. Suddenly they were both laughing. Oikawa pinched her cheeks, and grinned as she yelped.

"Hey, I've been wanting to ask you for a while now."

She rubbed her red cheeks, bits of laughter still bubbling from her lips. "What is it?"

Yachi didn't see it coming when he swooped down and kissed her cheek. She could feel his smiling lips on her warm cheek as he spoke up.

"Go out with me."

She stood frozen, as he straightened up. He chuckled as her hands flew to her face, covering her burning cheeks. Her mouth felt numb as she tried to form an answer. She didn't get to though, when a loud gasp was heard from behind Oikawa. She heard him curse softly before they both turned to the person who interrupted them.

"Hi-Hinata-"

The ominous aura surrounding the carrot head and his trusted partner and rival could unnerve anybody. But apparently Oikawa was not someone to feel intimidated by the duo's murderous glares. If anything, it only served to amuse the setter. The dark aura intensified as Oikawa smirked.

"Yo, Chibi-chan, Tobio-chan. How ya doin'?"

A/N: I don't know what happened, I didn't plan for this chapter to flow this way. Oh well.

Daiō: Grand/Great King. Something that Hinata likes to call Oikawa in the canon series.

Takoyaki: Fried dumplings made of flour, minced cabbage and has pieces of octopus in them. Very good stuff I tell ya. You can google for image.

Yakisoba bread: It's basically a hotdog bun stuffed with fried noodles instead of hotdogs. A staple food for Japanese youth, I guess.

So I thought of skipping the explaining, but I think that some of the readers would want to know what and why I chose 'Yabai Koi' as the name. So here we go:

Koi: love. I think most of us know this right?

Yabai: People normally used to use it to mean "Look out!" or "Heads up!" The 'Yabai' that I used in the summary is used to say that something is "bad" or "up to nothing good"… well something like that. So in the overall summary it means that Kageyama is saying that everything about Oikawa is 'not good'. You get my point, right? So there was an element of danger to it- this is only used figuratively now. Something bad happens and we say yabai to mean "Now I'm in for it!"

However, 'yabai' is also used as a slang of sorts. Just like how the word 'sick' is used nowadays to say that something or someone is very good or awesome, like when someone says that the new iphone is 'sick', then he means that the new iphone is something terribly good. So for Japanese, when something good happens and they say yabai, they're saying that whatever is so good is going to make them lose control. Or that something is so good that they can't really stop liking it.

In this story I'm using 'yabai' to signify both meanings. In saying that Oikawa couldn't help himself but fall for Yachi, and the fact that he doesn't know why and couldn't seem to stop liking her is both good and bad for him, which is 'yabai'. The same applies to Yachi, especially since being friends with Kageyama, he might probably have told her at some point that Oikawa is always up to no good, with his scheming and all.

So Yabai Koi means… it's pretty hard to explain in words but if I have to put an English word to it then 'Yabai Koi' means 'In Too Deep'. I hope you get what I mean. Hope this helps.