A/N: I've always loved Codename: KND and the couple 4/5 as a child, but seeing as that would never happen I thought I'd find some fanfics about them here…but then I find out that there's barely any! I've only read 2 but they're both discontinued and forgotten.

Plus, I honestly feel like the 3/4 couple is overrated. In the show it's implied that they become married in the future so why bother making more fanfics about them? Hence why I decided to write this! I wanted to read something other than 3/4 cos 4/5 is by far the cutest and the best so I decided to add a little something of my own to the KND fanfiction world.

Oh, and this fan fiction is gonna be pretty 'angsty' and kinda slow too, I reckon, so if you're not interested in that sort of stuff AND if you're not particularly fond of this pairing then please do not read!

If you're here to be rude then your presence is not needed here xD

Disclaimer: Unfortunately, I don't own anything! It all belongs to the awesome Mr Warburton!


Chapter 1: Operation H.E.A.R.T.B.R.E.A.K

"Can't believe that just happened," Wallabee 'Wally' Beatles, muttered angrily to himself as he moped in his boxing ring room. His fists clenched against his knees as he stared at the ground, his straight, sunny blond hair flopping in front of his eyes.

He had mustered up the courage to finally admit his love for Kuki Sanban, the only girl he ever liked. He was hopeful but just as he had approached the girl in the oversized green sweater, he witnessed her giggling next to Nigel Uno in front of the TV.

Originally as he stormed back into his room, he did try to convince himself that they were just being friendly...but it didn't seem like it either. She seemed so happy and Numbuh 1 was actually smiling. He frowned, deeply thinking back to it.

Does he like Numbuh 3 too? The thought caused his fists to clench further and his jaw to tighten. Of course, he cruddy did! He had to have, otherwise why were they both smiling at each other like lousy dorks?!

He breathed a heavy sigh and ran both hands down his face, digging the heel of his palms against his eyes. Honestly, he just wanted to get rid of the pain in his chest; he wasn't used to this, that was for sure.

"Numbuh 4? Boy, you in there?" Abigail Lincoln's voice floated through the other side of the door. Wally resisted the urge to groan in irritation and instead, decided to remain silent. Can't a guy get some peace and quiet in this cruddy treehouse?!

"If you don't open this door any second, Numbuh 5's gonna kick it down!"

He snorted, running a hand through his hair. Pfft, she wouldn't d-

He shouldn't have doubted her for a second because, in the next second, the door flung open with a loud bang, causing him to jump five feet into the air.

"What the-!?" His eyes wide, he stared at Abby, her dark eyes narrowed and her slender arms on her hips. The surprise within him soon faded and anger took over. His eyebrows furrowed and he glared at the girl in front of him. "What do ya think you're doin'?!" he exclaimed, his heavy Australian accent filling the silent room.

"I'm tryna talk to you, that's what I'm doin'," Abby said in a matter-of-fact tone.

Wally scowled and turned away. "Just leave me alone, alroight?"

"Nah uh, that ain't happening, boy. You've been mopin' for a solid two days now and Numbuh 5 wanna know what's happenin'." She plopped next to him and he let out an irritated sigh.

"Nothin's wrong, Numbuh 5," he spat. "Now let me mope in peace, will ya?"

"What did I just say, boy? I ain't leaving 'till you spill," she said, ignoring his outburst as if nothing had happened. Upon inspecting Wally's dejected face, Abby's eyebrows furrowed, her dark eyes filled with worry. Things had been going fine with Sector V for a while, up until two days ago. She hadn't witnessed what had happened or who had bothered Numbuh 4 but someone clearly had and she wanted to get to the bottom of it.

The team wasn't the same when a member was less than 100%. Plus, Wally was a good friend of hers and she felt it her duty as a friend to comfort him.

The blonde didn't share the same notion as the dark-skinned girl beside him. He wanted her to leave him alone, give him some privacy so he could punch things and then sleep the whole day.

Wally sulked. But then again, telling her was probably the best way to get her off his back.

He raised his arms in the air in exasperation before letting them flop back down. "Alroight, fine! I'll tell ya," he grumbled, distastefully, turning his head away. Abby sat next to him, patiently waiting.

"Kooks-" he clenched his jaw before correcting himself, "Numbuh 3 likes Numbuh 1," he muttered to himself, his eyebrows furrowed - although it went unnoticed as his scraggly blonde hair were in the way - and a frown on his face. From the corner of his eyes, he could tell that Abby didn't hear him well as she leaned closer.

"What? Boy, you better speak up or I swear-"

Wally tilted his head back in agitation before running his hands up and down his face furiously. "I said Numbuh 3 likes Numbuh 1, alroight?! Now leave me alone," he grumbled. He flopped back onto his bed and reached up, his arms covering his eyes. Abby, on the other hand, couldn't help but feel sorry for her short friend. Sure, he was a bit brash but he could be a sweetheart...at times.

She, along with Hoagie, who was Numbuh 2, teased him all the time due to the crush he harboured. She had always figured Numbuh 3 liked him back too since they made it so obvious.

But, maybe things weren't as simple as they had thought.

"Are ya sure Numbuh 3 likes Numbuh 1?" she asked, slowly. When the blonde boy didn't answer, Numbuh 5 sighed in irritation and yanked on his orange sleeve. "Numbuh 4, are ya even listenin' to me?"

"Nah," his voice came out muffled from beneath his arm. She clicked her tongue and reached out, grabbing him by the collar and dragging him up to a sitting position.

"Agh!" a high-pitched shriek left him, "what're ya do-?!" His fury laced words were cut off by Numbuh 5's dark gaze, piercing into his forest green eyes. Wally frowned deeply, the pain in his chest intensifying.

"Numbuh 5 can tell you're hurt, you ain't foolin' nobody."

"I'm not hurt!" he said, his tone defensive. The look that she gave him, however, caused his shoulders to deflate. Oh, who am I kidding? He knew he couldn't fool anyone, let alone Abby. "Alroight, fine. I'm not okay. I'm...far from okay."

Slowly, her fingers loosened and the grip on his collar left completely. He sunk back into his position on the bed. "But I know she likes Numbuh 1, I'm sure of it! I saw 'em cuddlin' up to each other and smiling all giddily and all that junk."

Abby, seeing Wally shake with anger ruffled his bowl-cut to try and calm him down. She didn't want to rile him up further, but it seemed as though he would burst no matter what she said or did at this point.

"Get a hold of yo'self, Numbuh 4. It don't sound like something Numbuh 1 or Numbuh 3 would do. Maybe it's ya imagination playin' up."

"It's not," he snapped, glaring at her. Numbuh 5 just doesn't get it! "I know what I saw!"

He was 100% sure of what he saw. Numbuh 1 was smiling for crud's sake and for Numbuh 5 to believe otherwise was irritating him to no end.

"Kuki doesn't like me back." He laughed humourlessly to himself. "Who was I kiddin'? She would never like someone like me." And in a moment of pure agony, he laid back down on his bed again and let out a bunch of garbled nonsense. "UGHHGAGUDG, I hate this cruddy life!"

Abby's face was skewed with concern for her squirming friend. She couldn't stand him in such turmoil. She bit her lip, tapping her chin; there had to be something she could do to help. If he had indeed seen Numbuh 1 and Numbuh 3 cuddling then going up to her and demanding her to explain what he had witnessed was definitely not the best idea.

The only thing that she could think of, for now, was to get his mind off things. It would be hard, but it seemed to be the best medicine. Especially since today was one of their many days off and there was no mission.

Abby stood up and turned around, her long black plait swinging around with her. "Let's go, Numbuh 4."

He remained still; he just wanted her out of his room. When he didn't respond, Abby's face fell and she stared at the Australian boy's unmoving body in irritation.

So she tried again.

"Let's go! Will ya hurry it up?"

"No," he replied with childish stubbornness.

"Boy, get your butt outta that bed!"

He sat up and scowled. "Leave me alone, for crud's sake! Can't a kid get some privacy 'round 'ere?" he exclaimed, his voice bouncing off the walls of the treehouse.

"No," Abby dead-panned, her arms now crossed causing the bangles on her wrists to clink around. He was already irritated about everything, and that noise just made it worse. "We're gonna be havin' some fun today. You can wallow and mope around some other time, but not while Numbuh 5's around."

Wally groaned as she grabbed his arm and dragged him to wherever - at this point, he didn't even care anymore. He just knew he didn't want to do anything. On the other hand, Abby strode off, set on getting him to forget and have fun even for just a little while.

"You've gotta be kiddin' me." Wally stared blankly at Abby who rolled her eyes and plopped down on the red sofa. "A movie?" His lips turned into a frown as he slowly inched towards her.

"What's wrong with a good ol' movie, huh?" she taunted, raising an eyebrow at Wally who sat down a few inches away from her. She wasn't as annoyed as she displayed herself to be - after what he thought he witnessed, she couldn't really blame him for being his usual jumpy self.

"Nothin's wrong with it, just, oh I dunno," he pretended to think before bursting out, "I ain't really in the mood for a cruddy movie!"

"Look, Numbuh 4, we're gonna watch a movie whether ya like it or not. So shut your trap and enjoy it."

He scowled at her, but she ignored him, grabbing the remote and turning the TV on. After crossing his arms stubbornly, he began to bang his head on the headrest multiple times, cursing himself for letting himself be dragged here as Abby switched between channels. He knew she wasn't like Kuki but still.

I swear if it's that ridiculous, lousy piece of cruddy junk called 'Rainbow Monkeys', I'm hones-

When she stopped at a certain channel, Wally shot up.

"Wait wait, you're alroight with watching this?" He stared at Abby wide-eyed who shrugged. Considering it was to cheer him up, she wanted to let him watch whatever he wanted. Whatever made him happy.

"Wrestlin's not so bad, I guess," she said, with a soft smile. Wally blinked. He narrowed his eyes at her a few seconds later, suspicious. He wasn't sure why she was being so nice. Well, he supposed she was always nice, but going this far as to let him watch a wrestling show?! That was a rare occasion!

He then shrugged. "Noice! I ain't gonna question your choice so," he snatched the remote from her, "I'll take that, thank ya very much."

She rolled her eyes and shook her head, a smile slipping in amusement. Everyone in Sector V knew that Wally was particularly...obsessed with the TV remote and had to have it in his hands. Even pressing the button on the TV to change the channel was almost like a curse to him.

After a few minutes of watching wrestling on TV, Wally was restless. His mind wouldn't stop wandering over to a certain bubbly, Rainbow Monkey loving girl and it drove him insane. Abby could see that TV wasn't doing anything to help him as he slid his way down the sofa, only half his body being supported. His head was propped up with his hand as his elbow rested on the armrest.

The deep frown on his face was an indication of his utter boredom. At least, it was for Abby.

"Hey, Numbuh 4."

No response.

"Numbuh 4," she said, a little louder. When he didn't respond, she yelled, "Oi, sparkle-butt!"

He grimaced. "What do ya want?" he drawled, annoyed at the nickname she used. He spared a glance at the girl next to him who was giving him a pointed look.

"I know you ain't interested in the show, so stop pretending, genius," she snapped. Wally groaned and slid all the way down the couch, ending up on the floor. It was practically impossible to fool her and it annoyed him that nothing could get past her.

Abby plopped to the floor beside him, knowing why he was feeling so down even after watching something he was usually interested in.

"Numbuh 5's never seen you so upset - not even when Numbuh 3 got kidnapped at the beach by knights that one time!" she exclaimed.

He sighed. He had never felt so upset, either. He didn't think there was anything anyone could do. Except for Kuki. She'd probably be the only one to cheer him up - of course, he'd never admit that because they'd tease him and because...

"AGGH!" he yelled in frustration. "I can't stop thinkin' 'bout 'er!" If this wasn't such a serious moment, Abby would have laughed at the sulky face he had on; it was so like him to act this way, though, she did expect him to be angrier.

"Well, that's what love does to ya, baby." She shrugged casually, a tiny smirk playing on her lips.

Wally glared at her, his teeth grinding. "I'm not-" he cut himself off all of a sudden, a long pause between them. He liked Kuki - a lot, but...was it love?

What is this love schmuv thing anyway?

"This is dumb," he suddenly retorted, scoffing when he couldn't find an answer.

"What is, boy?"

"These..." he gritted his teeth, feeling disgusted with himself, "...feelings." His insides, however, were reacting in the opposite way; he tried to get rid of the ache in his chest by shaking his head furiously, his blonde hair flopping everywhere. "I just wanna punch somethin'."

"Nah uh!" Abby was alert now, her eyes wide. Knowing him, she didn't want to leave him alone and risk having him destroy the treehouse! "You ain't doin nothin' of the sort!"

Then, out of nowhere, an idea formed in her head. Obviously, Wally was most likely assuming that Numbuh 3 was interested in Numbuh 1. Maybe if he talked to her and cleared things up...things might be fine. After all, he hadn't asked for an explanation and only jumped to conclusions. She spared a glance at the distraught, but also furious Wally sitting next to her and she sighed.

She had to at least try and do something to help.


A/N: Hey guysssss, hopefully, that was okay. I'm a horrible writer and the POV's might be off and all but *sigh* I'll definitely edit sometime in the future when I'm done. It's just the beginning so it's also a little slow but things will slowly pick up! And yes its a 4/5 fic, I know it doesn't seem like it now but FEAR NOT, things shall be happening, I just don't want to rush into things! XDD