Hello everyone! Um, I'm not actually sure what to say here for right now. This is, personally, one of my favorite crack ships for one reason or another and I just got a really strong inspiration to write a story about it. So we'll see how that goes.
This is also posted up on my Archive of our Own account if you prefer there, that 'view all' option is pretty tempting.

Oh and there are some timeline differences for pretty much every series involved.
Frontier takes place in 1995, so around the time Tai and Kari first encounter Digimon, while Adventure takes place a year later, so in the year 2000. Which, of course, means Adventure 02 takes place in 2003.

/Execute: Opening Phase: 「New World」

Chapter 1: Boy in the Water

To be honest, Takuya didn't know he would return to the Digital World someday. He was sure some of his friends did, Koji being the first one to come to mind, but he truthfully thought that he was done. It wasn't that he didn't want to go back, mind you; he just thought he was done with the whole saving the world business. So it's kind of funny how things turned out. Here he was, back in business. What was that phrase Lady Ophanimon told them when they first returned? Oh right.

The destinies of the Chosen Ones are forever intertwined with the Digital World.

And with that being said, it was definitely a possibility for their destinies to end in the Digital World, which had almost happened to Koichi during their first adventure. Even then, Takuya had high hopes that they'd pull out a miracle over Lucemon and they did. But this time this time Takuya wasn't sure that even a miracle would help here. Right now, he wasn't Takuya but EmperorGreymon, the Zeta Warrior of Fire. He looked over to his partner, MagnaGarurumon, then over to his fellow Chosen Ones.

"MagnaGarurumon, this isn't working." He spoke. The two floated above the ground, staring down a Megidramon. He had appeared in the Digital World a while ago, in a great burst of power. The Legendary Warriors fought against it but the unthinkable happened, they were defeated. The Warriors had actually lost strength when they separated from the kids four years ago, humans apparently had a great reservoir of untapped energy for Digimon. Upon figuring this out, the Celestial Digimon were quick to contact, beg and arrange for the Chosen Ones to return to the Digital World to deal with this monster. Of course they accepted; the Digital World was a second home to them and there was no way they could leave the it to suffer. They just didn t think the beast would be this strong. EmperorGreymon tightened his grip on Ryugonken.

"Yeah, I can tell." The Warrior of Light sighed. He had long since abandoned his armor, speed being more important in this situation. "Do you have another plan?"

"Yeah... No, I'm working on one."

"You should hurry; I m surprised he s waiting for us as long as he has."

"Right. Okay, this is a little risky but get your weapons back on. I ll distract him til then; we re hitting him with everything we've got. "The Legendary Warrior of Fire dashed forward, sword raised. "Pyro Dragons!" He swung his blade, letting several dragons of white fire at the Megidramon. While this attack was quicker to do then its normal version, it wasn't as strong.

"Dragon Howling!" The dragons exploded as they connected with the sound waves of the attack.

"Here I come!" EmperorGreymon soared through the smoke as a flame dragon himself, colliding with the massive dragon Digimon. It groaned in pain as it reeled back. "MagnaGarurumon, now!" EmperorGreymon jumped back.

"Feral Fire!" Missiles and light attacks of all kinds rained from MagnaGarurumon, slamming into Megidramon before he was able to fully recover from the Pyro Dragon attack. The attack left the area covered in smoke and uncertainty.

"Did that get him?" The Fire Digimon questioned. An arm quickly lashed out of the smoke, grabbing him and answering his question. Gah!

"EmperorGreymon" MagnaGarurumon yelled as he dashed forward, dropping his armor once again. "Starburst Hunter!" The Warrior of Light became cloaked in his element as it slashed through Megidramon's wrist, freeing his partner. In a fit of fury and pain, the Mega Level Dragon swiped, using his still existing hand, slashing MagnaGarurumon moments after his attack ended, sending the Hybrid Digimon crashing to the ground.

"Dragonfire Crossbow!" An arrow of fire prevented Megidramon from continuing his assault on MagnaGarurumon, for the time being, as Takuya flew over to where Koji landed. It was near the other Chosen Ones, whom he could see grouped around the crater. "MagnaGarurumon, are you okay!?"

"Y-Yeah..." That voice wasn't really MagnaGarurumon's though, it was that of the human who becomes him; Koji Minamoto.

"Damn..." He turned to look at Megidramon. "Dragonfire Crossbow!" He sent another fire arrow at the dragon Digimon in hopes of keeping it occupied. What are we going to do now...?"

"Me and Koichi have our Spirits back, we can help!" J.P. was quick to remind Takuya.

"No. You two aren't strong enough, not right now" Something in the goggle boy's head clicked as he turned his head to look at them before dashing forward. "Actually, give me some cover fire. I've got a plan, wish me luck guys!"

"Takuya, don't do anything stupid!" He heard Zoe call after him, she always had a knack for realizing when he had a rather dangerous plan in mind. And this plan was far more than dangerous. He didn't like it but it was honestly all he had.

Execute: Beast Spirit Evolution!

They both cried out as they summoned fourth their Fractal Codes, and then ran their D-Tectors across them.

"MetalKabuterimon!"

"JagerLoweemon!"

"Megiddo Flame!" Apparently tired of their stalling, Megidramon sent several balls of fire at EmperorGreymon.

"Electron Cannon!"

"Ebony Blast!" The two Legendary Warrior s attacks with the Mega Level's attack, exploding.

"Ryugonken!" Takuya yelled as he burst through the explosion, stabbing his blade into Megidramon's chest, right in the middle of its Digital Hazard. "Dragonfire Crossbow!" The dragon wailed in pain as it brought its claw to its chest, stabbing EmperorGreymon.

"Dragonfire Crossbow!"

"Dragonfire Crossbow!"

"Dragonfire Crossbow!" EmperorGreymon fought through the pain, continuing his rain of attacks with his sword still in Megidramon's chest until finally, the wild Digimon stopped. Its claw fell out of EmperorGreymon s back as its arms fell to its side. D-Did I do it? He stuttered; on the ground, Koji's eyes went wide.

"Takuya, get out of there!" The Digital Hazard on Megidramon s chest had begun to glow with a red light.

"Huh? What's tha-" EmperorGreymon was cut off as Megidramon exploded in a red light. JagerLoweemon and MetalKabuterimon put all their effort in making sure the non-Digimon Chosen Ones weren't sucked into it. The explosion expanded out, and thinned, in one quick motion before it was gone. In its place was nothing but air.

"...Takuya...!"

/Execute:

Takuya, yes the human, looked up into nothingness as he float about in, well, nothing. That's all that was around him, blackness; he was half sure that his eyes were just closed. He couldn't feel a thing until, that is, he suddenly could. With a splash, he was covered in what he thought was water. Maybe a river, or an ocean, but neither of those things were near the battleground. And it certainly didn't feel like water. Well, it did but... he couldn't place the feeling; something didn't seem right. This water was cold but in a different way, a chilling way. Whatever it was, Takuya didn't have the strength to swim out of it and what little strength he did have was slowly slipping away. Almost as if the water was draining him. He didn't have any more time to think about such things, however, as unconsciousness took him.

/Execute:

Two years of peace was exactly what the world needed after MaloMyotismon. And while it was hard, the DigiDestined of the world had managed to, once again, return the existence of Digimon to being a well-kept secret; mostly be referring to how the previous reveal, their fight with Apocalymon, had been treated as a massive hoax. And gradually, things returned to normal but really, the most important thing was that it was currently summer! And how Kari had, literally, the entire vacation mapped out, visits to the Digital World included.

In fact, that's where they were now, on a picnic. Her, her brother and Davis, who'd caught them on their way out and practically begged to come. It wasn't that much trouble, Kari had made extra. Granted, she was never sure just how much Agumon would eat but it looked like they had enough. Gatomon was never one for picnics anyway.

She looked at the two boys sitting in front of her; they were talking about soccer, and giggled. It was nice, you know. Just going and having fun in the Digital World. No running from some evil Digimon, no saving the world, none of that; just peace and relaxation with friends. They did it a lot now-a-days but every time felt like something new for Kari. Though, sometimes, she couldn't help but think about when this would stop. When the new big threat, or even another old one god forbid, would show its face and they'd be forced to once again take up their mantle as DigiDestined, the Digital World's protectors.

"Kari?" She heard her partner whisper, having perched herself on the girl's shoulder when she wasn't paying attention

"Ah, Gatomon, sorry!" She turned her head to look at the white cat. "I got lost daydreaming, I guess." She giggled but when she noticed that Gatomon had a serious expression, she stopped. "What s wrong?"

"Can't you hear it?" She asked, causing Kari to pause.

"Hear wha-"
Help me.
Kari gasped, putting her hand to her mouth. "What was that...?"

"Not sure. Veemon and Agumon couldn't hear it." She grimaced. "And since those two aren't reacting, I don't think they can either." And then she smiled. "I'm just happy you can. I thought I was going crazy for a minute." Kari smiled at her cat companion before a question sprang from her lips.

"But why...?"

Help me.

"Okay, there s no time for that." Kari thought. "I'll ask questions afterwards." She stood up. "Um. Tai, I uh, have to go to the bathroom." She blushed, she honestly couldn't think of a better excuse.

"Oh, okay. Just don t stray too far." Tai chuckled at her obvious embarrassment, and burst into a full blown laugh when he saw how embarrassed Davis was. "You should see your faces!"

"Hey now!" Davis mumbled. "T-That's not fair..." Kari heard Tai start laughing again as she wandered off into the forest.

"Do you smell anything, Gatomon?"

"Nothing. Well... actually..." the Digimon paused before her eyes opened wide.

"Gatomon?"

"Kari, run!" The cat Digimon turned her head towards her partner, a look of fear spread across which convinced Kari a lot more than it had any right to. She immediately turned tail and ran back in the direction of Tai and Davis.

"Gatomon! What did you smell!?" Kari almost yelled but with the fear that spread across Gatomon's face, she already had an idea.

"It's the same thing I smelled when you disappeared in the Dark Ocean." Just hearing the name of that place almost made Kari stop, the only reason she didn't was because she realized that that's what they were running from.

"But how...?" She tried to make sense of it in her head.

Help me.

She stopped running.

"Kari...?' Gatomon stared at her.

"We can't run, Gatomon. Whoever that is sounds like he's in pain and..." She paused. "I couldn't forgive myself if I ran away in his time of need, especially if I'm leaving him there." She said there with more venom than her partner had ever heard her mutter before, it didn't suit her really.

"...You're right. But we should get the others first, at least Tai and Davis. It'll be better to go with a group." Kari nodded then started running towards them again. They hadn't walked off too far so they would've reached them soon; would've being the key word. Kari tripped, tumbling over and knocking Gatomon off her shoulder. Gatomon tumbled for only a moment before getting back up.

"Kari, are you oka-?" She stopped as the girl she was on not 30 seconds ago had vanished.

/Execute:

"Gatomon..." Kari muttered as she raised her head, she had landed on all four. She wouldn't have panicked about her partner not being in sight had it not been for the familiar dark sand that now spread around her. She quickly looked around herself, nothing but sand as far as she could see, as usual. But she could hear the ocean behind her.

HELP ME.

It was louder now, and it reminded her that there was a reason she was here. That reason was enough to allow her to stuff her panic down; she had a mission to accomplish. She picked herself up, dusted herself off and turned herself to the water. She scanned the ocean line before choosing to head to the right and walking along. As always, she felt something watching her but just like her panic, she was about to keep her fear down. "Just find whoever this is and get out." She kept repeating in her head, forgetting that she had no clue how to leave. The only time she stopped repeating that phrase was when she found the boy, barely on the shore face up. He had brown hair which was rather spiky and wild, but nowhere near as wild as her brother's, and a pair of goggles around his neck, she would've gotten a chuckle from their similar headgear if the situation had been less dire.

She quickly made her way towards him, pulling him completely from the water. She put her head to his chest, checking to see if he was still breathing and, surprisingly, he was. Perfectly. She felt too much relief to question how he'd been in the Dark Ocean for god knows how long yet managed to still be breathing fine. Then came the hard part, figuring out how to carry him; he was far too heavy for her to simply pick up. Though let it not be said that she was a girl who gave up. After a bit of trouble, she managed to get him on her back. His arms went over her shoulders and she held up his legs.

"Man, you owe me one after this." She giggled as she walked forward, already stumbling from the weight. It was going to be a long walk to wherever they were going. Anywhere was better than here. She walked as far as she could, which was admittedly only a couple feet away, before stopping. "Okay there has to be a better way..." She sighed.

"So you have returned to our master?" A voice, no multiple voices, came from behind Kari. She quickly, well as fast as she could, turned around to once again face the ocean. Those shadowy Digimon she d seen before, the not Scubamon, began to walk upon the sand from the water. "How surprising."

"I did not come for your master." Kari frowned as she backed up. "I came here for him." The Scubamon looked between each other, then back at Kari.

"What is a human doing here? Our master did not summon him." Now that confused Kari. How else could this boy have gotten here?

"Oh be quiet, you can't trick me!" She said after a while. She took another step back.

"It matters not. You must come with us! Our master has been restless since the last time you left!" The Scubamon came closer to her. "We must not disappoint him again!"

"Stay back!" She yelled, taking a few more steps back. The Scubamon walked closer. "Gatomon..." She whispered. "Help me." She thought to herself. A light began to shine brightly from her side, the Scubamon stepped back. Gatomon! She cried with happiness, thinking that it was her Digivice. She then noticed that the boy had begun to stir; he moved his arms and pushed off of her back. "Wait-" She began.

Execute: Spirit Evolution!

Kari was quick to turn around, confused. A ball of light had appeared from nowhere, right behind her, where the boy should ve been. She quickly grabbed her D-3 from her pocket and looked even more confused over the fact that its screen was shining as she thought it was. The ball of light began to fade, however, lines of some kind of code peeled away to reveal a Digimon, one she had never seen before.

"Agunimon!" It yelled out, fire coming out from between its armor pieces.

"Agunimon?" She raised an eyebrow, I'm not even sure it's possible to be more confused than she is right now.

"Stand back!" He yelled, stepping in front of her and putting his arm up. The Scubamon looked amused, if anything.

"A human becoming a Digimon! Ha!"

"Pyro Punch!" Agunimon cried out as he sent a fiery fist into one of the Scubamon's faces, the attack instantly deleted it.

"Ai!" One of them screamed. "Surround him!" The rest of the Scubamon wrapped around Agunimon, having forgotten about Kari for the time being. Agunimon only smirked.

"Pyro Tornado!" He spun around and created a tornado of fire. His leg stuck out from within, striking each of the Scubamon and deleting them. By the time he stopped he attack, all that remained of the would-be attackers was black bits that drifted into the ocean. Taking in his job well done, Agunimon turned towards Kari.

"A-Are you okay...?" That was the only thing Kari found herself able to say. The fire Digimon began to nod before the sphere of light surrounded him again. When it faded this time, however, it revealed the boy, who promptly fell against the sand, unconscious once more. Kari walked over to him and went down to her knees, to examine him again, taking note of the device now in his hand. "A Digivice... And not one I have ever seen..." She grabbed his hand, taking hold of this new Digivice. Suddenly, its screen shone bright, wrapping around both of them in another sphere of light.

Thank you.

When that light faded, Kari found herself once again in the Digital World. She quickly looked around, noting that she was exactly where she'd been before she tripped.

"Kari!" She heard someone yell. It took only a moment for her to recognize the voice.

"Tai!" She called back. "Come quick!" The speed at which he found here was legendary. He quickly went onto his knees and hugged his sister.

"Kari, where did you go, I was so worried!" He rambled on. "Gatomon came back without you... and said something about the Dark Ocean." He pulled away.

"I'll explain everything." She assured her older brother. "But, right now." Her eyes drifted to the boy she had just saved, though he ended up doing the most saving, from the Dark Ocean.

"Who's that?" Tai finally noticed the boy.

"I-I'm not sure but..." She looked back to her brother. "I think he's a new DigiDestined."

/Execute: Ending Phase:「Egao no Mahou」

Begin: Omake

Takuya: Well, that was certainly... interesting. .

Kari: Are you upset that you got knocked out so early on in the story?

Takuya: Of course not! Why would I be, I mean, it's not like I was beaten or anything. Just... overwhelmed.

Kari: There's a difference?

Takuya: In this situation, yeah!

Kari: Right, I'll take your word for it. Anyway, we're here for a reason right now!

Takuya: Is that so?

Kari: Don't tell me you forgot. Man, Takuya...

Takuya: Sorry. A reminder would be nice though.

Kari: shadriver does not own Digimon in any way, shape or form.

Takuya: Oh, right. The disclaimer! I knew that.

Kari: ...What am I going to do with you...