Author's Note: I know this has been done before but this pairing and jealousy is what I live for so I couldn't help myself. The stories in this have nothing to do with each other unless they are divided into parts. Rated T mainly due to swearing and possible darker or suggestive themes in future chapters. Just to be safe. There will probably be more Jealous!Aomine than Jealous!Kagami, but I'll try to give Kagami at least a few chapters.

It all began about a month after the Winter cup finals. Not his feelings for Kagami-he'd had those ever since he lost against him- but that troublesome emotion called Jealousy.

Aomine had never been worried about Kagami and Kuroko's relationship. The Touou ace knew that despite Kuroko's indifferent attitude towards Momoi's advances, his former shadow was in fact in love with her. He was just having difficulty showing it.

The other losers from Seirin weren't a threat either and that Himuro guy was clearly nothing more than a brother figure.

However, when Kagami suddenly started to get along with the members of Aomine's own team, he had felt the first serious sting of jealousy. He'd never considered his teammates as competition because the idea had been so absurd. So when it suddenly happened he was completely caught off guard.

Kagami wasn't supposed to get along with Touou! Sure, he could understand that the redhead got friendly with Sakurai since they shared the whole housewife tendency. However, when Kagami suddenly invites Wakamatsu out for a one-on-one in the park and dinner at Maji afterwards, it's a completely different story.

Wakamatsu of all people!

Not to mention the study group with Imayoshi and Susa every Tuesday afternoon. Kagami had said that he needed help with his studies and since the two Touou players were graduating soon, they had "lots of experience" about studying and would have no problems helping him understand things. Aomine didn't really understand the logic but then again, he wasn't the brightest person out there so he left it alone. Kagami had also said that none of his upperclassmen were third years since Seirin was a new school.

"Your upperclassmen are great, Aomine. Why don't you try being a bit nicer to them?" Kagami had said during their last one-on-one.

What a fucking joke.

So why? If Kagami liked to hang out with the Touou team, then why wasn't he being friendly with Aomine too? Sure, they played basketball together and it had happened once or twice that Kagami invited him over for dinner afterwards. He had even spent the night at Kagami's place once. But the redhead never asked him to hang out just for fun. If it wasn't about basketball, Kagami didn't seem interested in spending time with him at all. Their weekly one-on-ones weren't even weekly anymore because he was always busy with Wakamatsu and the others. Especially Wakamatsu.

This whole thing frustrated Aomine to no end. And his feelings for Kagami didn't make it any easier. He felt rejected and betrayed.

His teammeates constantly talked about how great it was to be with the Seirin ace and how surprised they were that he was such a nice person. Wakamatsu had even dared to say that he wished Kagami would join their team and take Aomine's place.

Aomine knew he had to do something. He had to get Kagami's attention somehow. It had been so easy before when Kagami kept coming to him for rematches. The redhead had started to win more and more one-on-ones against him recently. Had his interest in Aomine disappeared now when he had beaten him? Now that he was truly Aomine's equal? Was Wakamatsu his new one-on-one favorite?

The thought made him sick.

That blond loser wasn't even that good. In fact, he kind of sucked. There was no way Kagami could have more fun playing with him than with Aomine. Right?

Aomine looked over his shoulder to glare at said blond loser who was currently drinking from his water bottle. He thought about that time when he kneed Wakamatsu in the gut and how satisfying it would be to do it again. Harder this time. Way harder.

"Dai-chan!"

Aomine snapped out of his dark thoughts when he heard his name being called by Momoi.

"Huh?" He asked lazily and blinked at her.

"Is something wrong? You've been standing here spacing out for the past five minutes."

Oh. Had he really? He must've looked like an idiot. It was all Wakamatsu's fault.

"Whatever," Aomine said dismissively and began dribbling with the ball in his hands.

"Hey, Aomine, don't slack off!" Wakamatsu barked at him as he put his water bottle down and went back to training.

The Touou ace halted his movements just as he was about to shoot and glared back at his team mate with an even deadlier glare than before.

"Huh?" He growled threateningly.

Aomine had expected that howler monkey to lecture him but instead he was given a friendly smile that was so uncharacteristic that he almost dropped the ball. All he could do at that moment was to stare wide-eyed at his soon to be captain. Wakamatsu sniggered and patted him on the back reassuringly.

"I know our new training menu is tough but I'm sure you'll manage."

'Gross.'

"He sure is in a good mood. Actually, he has been smiling a lot lately," Momoi said thoughtfully as she and Aomine watched Wakamatsu make his way towards one of the hoops with a ball.

"It's disgusting."

"Dai-chan!"

When practice was over for the day Aomine decided that he should call Kagami and ask him to hang out. He wasn't exactly thrilled about being the one to make the first move, he'd rather have the redhead contact him first, but at the moment he didn't have much choice. The Seirin ace hadn't even texted him for a whole week now.

When he grabbed his duffle bag and was about to leave the gym, the door slid open and a familiar voice rang through the building.

"Pardon the intrusion."

Aomine looked up and saw Kagami stand at the entrance of the gym. What was he doing here?

"Oi, Bakagami, we're not playing today. Or were you that eager to get your ass kicked by me that you came all the way here just to ask?" Aomine teased with a smirk. He just couldn't resist.

Kagami rolled his eyes at the Touou ace and shook his head. It certainly wasn't the reaction he had hoped for. Normally the redhead would yell and throw insults at him. What a disappointmen.

"I'm not here for you, Aho."

Eh?

Before Aomine could ask, Wakamatsu passed him and went up to the redhead.

"Hey."

"Yo. You ready to go?"

Wakamatsu nodded. He turned to the rest of the club members and waved.

"See you tomorrow. Good work today."

Before they could leave, Aomine marched his way up to them with a displeased frown.

"You're here for him?" He asked and rudely pointed at Wakamatsu.

Kagami raised an eyebrow at him.

"Yeah?"

"Why?"

"Why do you care?"

"I don't care! I'm just wondering how someone could ever want to spend time with this loser willingly."

"Hey-"

"Whatever, Aomine. Come on let's go," Kagami said to Wakamatsu who looked like he would jump at the bluenette right then and there. The redhead couldn't blame him.

The ace of Touou watched through narrowed eyes as Kagami and Wakamatsu left the gym. His teeth clenched harshly togehter, his fists were shaking and his blood was practically boiling with scorching hot jealousy.