KrossoverXKing presents:

Operation: Eden

a massive crossover with High School of the Dead

BTW: I don't own any of them

Chapter 1: Well, this part's useless...

-X-

Takashi sighed wistfully as he walked down the hallway to his first class of the day, which he shared with his girlfriend Koto. The ex-girlfriend to his former best friend Kohta, she had tried desperately to make the portly boy like her, even going so far as to use her eidetic memory to learn everything there was to know about every firearm ever made.

This pissed Kohta off severely, and he broke up with her when she called him out on some fact or other, purely on reflex. Takashi had been standing with them, and sided with Koto. When Kohta called her a "friend-stealing whore", Takashi had punched his former friend one good time in the face, lifting the overweight boy off his feet and knocking him out cold.

After two weeks of Out-Of-School Suspension, with Koto coming by every day just to talk, Takashi came back to school with Koto as his girlfriend and unyielding respect from the female population.

For High School girls, this was unheard of.

Nevertheless, they hadn't done nothing when they spent those weeks together. Takashi had convinced the Freshman that zombies were real, and that they were coming. Soon.

The lithe brunette had taken it upon herself to memorize every survival guide they deemed worthy, as well as the Ultimate Zombie Survival Guide, glad that both of them knew English.

Of course, Koto had been surprised with Takashi's preparation. Being extremely fluent in over a dozen major languages, writing, reading, and speaking all included. He had a plot of land in Hokkaido that he had fortified just in case. Knowing parkour, Jeet Kune Do, Krav Maga...

He even told her of his weapons lockers, both at home, and giving her the combination for the one he had at school in Hayashi-sensei's office, which the P.E. teacher knew about.

Being the orphan of very rich parents, he had a lot of money. His father had been president of a private security firm, Akatsuki, similar to America's Blackwater. His mother had been a lead researcher in Umbrella Corporation's Tokyo branch. Both had died shortly after his birth, and Takashi had lived with various family friends until his teen years when he filed for emancipation.

Since she was so short, Takashi kissed his girlfriend atop her head before they went to their assigned seats. Sadly for Takashi, those weeks he was suspended from school had caused him to go over his allotted days allowed out of school before he failed, though he still went back most days to talk to Koto and avoid boredom.

So he was held back a year. He was 17 and a Sophomore, same as the 16-year-old Koto. If there was a bright side to the fact that he couldn't sit next to his girlfriend, it was the fact that he had the back corner seat next to the window that showed the Entrance Courtyard, and the gate that stayed closed during school hours being rattled by a man who kept running into them.

Wait, what... "...the hell?" he murmured.

"Ten points off your next quiz Uchiwa-san for your foul language," came the voice of his Language professor, Shidou Kouichi-sensei, as he strolled into the classroom. "Be glad I don't write you up or phone your parents."

Takashi growled at the man. "My parents are dead," he hissed lowly. There was no possible way that that asshole didn't know that.

"Personal problems have no place in a conductive learning environment," Shidou said maliciously.

Koto spared a worried glance back at him, but he had resumed staring at the man banging against the gate as Hayashi-sensei and the male P.E. teacher, Teshima-sensei came up to the man.

Takashi couldn't hear what was being said, but when Teshima-sensei shoved the man away, the crazy man latched onto his arm and bit a large chunk off.

Takashi gaped, and then realization dawned on him.

"They're here..."

"Another outburst, Uchiwa-san?" their Sensei asked, though Takashi's words had barely been a whisper. Takashi, however, had slid the window open and removed a throwing knife from his boots, tossing it into the eye-socket of the thing that used to be his P.E. teacher before it could attack Hayashi-sensei.

Hayashi-sensei followed the trajectory and saw Takashi leaning out the window, before he was yanked back by the collar, staring into the face of the man he hated most.

"Was that, perhaps, a throwing knife Uchiwa-san?," he asked gleefully. "I believe that's grounds for expulsion."

"They're here, you son of a bitch!" Takashi screamed, and it seemed only Koto took the hint as she bolted from the classroom, probably to Hayashi-sensei's office to grab a weapon out of his locker. "And if they're here, then rules like yours don't apply anymore..." He smacked the man's hand away, holding him at bay with an actual knife. Takashi then called out to the girls who sat beside and in front of him. "Niki, Ichijou."

Both girls instantly stood at attention, complete with crisp salutes. "Hai, Uchiwa-sama," they called out. Takashi smirked at their loyalty; it would be needed for what was ahead.

"Follow Koto to Hayashi-sensei's office. Tell her I sent you, then get Marikawa-sensei and meet up with me at Rally Point Charlie."

Without another word, both girls bolted out the classroom after his girlfriend. Everyone else in the class was dumbfounded at the events unfolding.

Takashi turned to the students in the class, and laid down the new law.

"Even if you don't grasp what's going on, even if you don't believe me, the fact is that the dead now walk alongside the living. But they are not peaceful. They are not even human! If a friend or family member is bitten, if anyone is bitten, they are infected, they will die, and they will come back as one of 'them'. Now this school is a good place to defend. Block the exits, block windows on the first floor, play to your strengths, cover each others weaknesses, and eat perishable food first. This is now a test of survival, and if you fail, you die..."

Takashi strode out, ignoring the pandemonium he caused by his speech and actions. He saw Shido being picked up by a few fangirls, who sent him a venemous glare. He ignored it, bolting towards the stairs to Class 2-B.

'It has to be done…'

The redhead was initially shocked to see him in her class, but her face softened almost instantly.

"Uchiwa! Are you cutting class and interrupting ours?"

Takashi paid no mind to the teacher, and held his hand out to his childhood friend. "Come with me, Rei..." He spared a glance around the class, and spotted a few familiar faces, as well as bright pink hair in twintails. "You too, Saya."

Wordlessly, both girls stood with blushes, surprising many with how easily they followed his orders. Hisashi, especially, got upset.

"What's wrong?" Saya asked once they were close enough to not be overheard. Absently, he saw the teacher calling the office.

"They're here," he said simply. "I saw one bite Teshima-sensei's arm straight to the bone, and he turned in like five seconds..."

"B-But you said it took 23 hours," Saya said, her voice barely at whisper level. "How is thi-"

"Let go of me, Hisashi!" Rei yelled as the silver-haired boy tried to pull his girlfriend away from the group. Takashi saw red.

"Get your hands off her!" Takashi roared, giving Rei enough of a distraction to return to his side.

"Don't tell me what to do with my girl!" Hisashi yelled posessively. He was in Takashi's face as he yelled, but immediately regretted it as Takashi smacked him hard enough to send his former friend to the ground.

Then he leaned down until he was whispering in Hisashi's ear.

"You think…that Rei is your's? When you asked her out, she came to me. She asked me out. But since I was already with Koto, I told her to go with you until what is happening now happened… She trusted me, and you got a girlfriend for all of six months."

He stood, ignoring the still prone boy now. "Rei, Saya. Let's go."

"Hai, Takashi," both girls chorused as they left, ignoring the teacher's incredulous yells as his two star students left with what many teachers considered a delinquent.

"We need to go to the gym," Saya said as they strode down the hall to the Activities Building, which also held the Senior classrooms. "We need the weapons Hayashi-sensei let you hide there."

Takashi shook his head, both as a response to Saya, and at Rei who began trying to contact her parents on his phone. "Koto, Niki, and Ichijou are headed there, and we'll meet them at Charlie after we get Saeko and Miku. Oh, and Alice is at home sick."

Both girls made a face when he mentioned the latter upperclassman. Miku didn't have the greatest reputation in school. That's what happens when you deny your Quarterback boyfriend for an underclassman. The fact that Takashi broke his leg while getting jumped gave him a sick satisfaction.

"Why Charlie?" Rei asked instead. "Why not Alpha?"

"Alpha's where it happened," Takashi explained as he opened his locker, grabbing a baseball bat. "And Bravo'll be overrun once this gets out, which will happen soon. Charlie's the only safe one in school."

Rei got frustrated with the automated message; Takashi had told her it would happen, but she was hoping for the best. "A lot of people are calling 110… Takashi can yo-"

"Attention all students and teachers! Attention all students and teachers! Currently there is a violent struggle occuring on the premises. Students, please stay in your room with your teacher and follow their instructions..."

They could hear the students' confusion as they passed the classes on their way to where, luckily, the two Seniors shared the same class.

"Not good," Takashi muttered. "It's gonna be harder to get them out if-"

"*smash, screech*"

"No fuckin' way… Girls, close your ea-"

Again the P.A. interrupted them.

"GAAAHHH! AH! Help me! STOP! Help! AH! I'm gonna die! GwaaAAHHH!"

There was a second where the only sound was the shambling and moaning over the loudspeaker. Then all hell broke loose.

People ran, tripped, and were trampled. They kicked, punched, pushed, and pulled without getting any further than before.

Surprisingly, Saeko and Miku were still in their class, patiently(in Saeko's case) waiting in their seats. That lasted until they saw Takashi, upon which they rushed over to him. Both girls showed him affection, Miku giving him a lipstick-enhanced kiss to his cheek, while Saeko hugged him. However, due to their height difference, Takashi was suffocated inbetween her breasts.

"*cough*… Right, right. Hello, ladies," Takashi said with a blush. While every female had respected him when he returned from OSS, most had gotten over it within a week. The rest, aside from those he was rushing to save, were back to normal inside of a month.

"Is that...Wakisaka from Current Events?" Saya asked as she pointed down the hallway. At the same time, the figure noticed them, and everyone realized Wakisaka wasn't human anymore.

Takashi took a step forward, brandishing his baseball bat, and calmly approached the shambling creature the undergrad had become.

As soon as he was close enough, Takashi swung with all his strength, and caved the man's head in.

"Don't fuck with us," he stated needlessly. He turned to the other girls, Saeko pulling out her kendo sword from her locker. While it was only made of wood, anything that gave you reach was preferable to nothing. At the same time, he helped the rest in grabbing brooms and unscrewing their handles to be used as weapons until the met up with Koto and the others.

"Alright," Takashi muttered, the weight of his solid aluminum bat resting on his shoulder, "let's get to Charlie..."

And so, they made their way to the Observatory.

-X-

"It's bad..." Miku muttered. "It's as bad as you said it would be, Takashi." All the way to the coast could be seen from their vantage point. The tell-tale black smoke of burning fires threatened to engulf the sky, but it was dispersed by the unusually high winds. Suddenly, the tell-tale sound of rotors drowned them out as half a dozen UH-60 Blackhawks – colored their namesake – streaked just over the roof, allowing Takashi to see the red-and-white octagon on the door.

"Was that the Americans?" Saya asked? "Or was it the Self-Defense Force?"

"Neither," Takashi said, causing all present to turn to him for answers. "That was the Umbrella Corporation; they have a branch in Tokyo."

"The company that made that cancer cure where they had to quarantine New York? That Umbrella Corporation?" That was Rei, who always kept up with current events. She'd make a good reporter some day.

"Yeah," Takashi sighed. "My kaa-san worked for them, but she died when I was young. A few of them, like Ada-san, watched me instead of me being with foster parents or in an orphanage..."

So he wasn't alone…

And that made him wonder where Koto was.

-X-

Said brunette was currently cursing to herself as she led the small group to the observatory, coined Rally Point Charlie. Directly behind her was Hayashi-sensei, followed by Marikawa-sensei, while Niki and Ichijou covered their rear. Each of them had a duffel bag; Marikawa-sensei's held medical supplies, Hayashi-sensei's contained weapons and ammunition, and Koto, Niki, and Ichijou all carried food and other survival necessities.

Luckily they hadn't run into many of the creatures which had once been fellow students and teachers, though Koto was also armed with a crossbow, and the others had a knife somewhere on them.

The fact that Hayashi-sensei's knife was a machete was not an issue, given the circumstances.

"There it is..." Niki panted, not being as physically capable as the others. The duffel was heavy, by the way.

Everyone soon saw the handrail leading upwards, as well as light streaming down the obvious staircase.

"Come on," Koto called out, as a burst of energy flooded all present at the prospect of freedom from the confined and gruesome school, as well as the fact that Takashi was waiting for them.

However, just before reaching the foot of the stairs, a long shadow with disheveled hair blocked most of the sunlight, causing the all-female group to stop in their tracks.

"Shh..." Koto said needlessly. Despite it only having been at most twenty minutes since Takashi saw the first one, they were all more or less settling into the mindset Takashi had drilled into them: that of teamwork, followed closely by survival.

Then the shadow turned the corner, bat in hand, and Koto tackled her boyfriend in gratitude.

"Oomph! Hey, Koto… I was just about to come looking for y'all," he said as he returned her hug.

"Well we're here," Ichijou said, shrugging.

"That you are," Takashi smiled, causing the young girl to blush. "Well, come on then. We've cleared the roof, and we're using the Observatory as a fallback just in case we can't make it out on the first try."

They nodded and filed past him, even Marikawa-sensei and Hayashi-sensei. He was glad those two decided to follow him. Not only were their skills invaluable, but so were they.

Takashi knew there was no way to win the upcoming war against the undead, so he didn't plan to try. He planned to fight what battles he had to until they reached the plot of land he had fortified in Miyama, Fukushima District, Hokkaido Prefecture, having blocked off the entire area and used the former strip-mining site as the foundation for his home. Then he would enact Operation: Eden.

Basically, Takashi got a harem. Koto knew about it, of course, but she was enough of a realist to realize this was the best way to distribute resources. Of course, they could have one guy for every girl, but that would double their consumption of resources, their need for space, and exponentially increase their chance of being caught. The same guy could impregnate multiple females at a time, though the reverse was not true. If there was only one female but multiple males, she could only get impregnated by one of them at a time, and would also need months to recover between each birth.

However, if there were multiple females, the births could be spread amongst them. And with Takashi planning on including fourteen girls in this trip, even if he impregnated one girl every two months, that gave each girl nineteen months between births.

Of course, Koto had gained some sass as Takashi's girlfriend, no longer believing she would have to settle for boys like Kohta. When Takashi told her why this was required(repopulation, as cliché as it sounds), she merely gave him a challenging smirk and said: "I'd like to see you try."

So that's what he was doing.

-X-

Chap 1 done! As I said, this will be a massive crossover, with everything from Dead Space to Dead Snow thrown in. Yes, Takashi has a harem. Yes, Umbrella is up to something. No, I'm not going to tell you now.

Their journey will take them across the planet, and even to completely new planets. Not that they know this yet. Takashi's place is in the southern tip of Hokkaido, near the main island. When I used Google Maps, there was a strip mining operation clearly visible, so I figured they wouldn't mind if I used it. Not sure if I wrote the address right, though.

These four stories will be the ones I work on until they're done, switching between them so I don't get writer's block. And no, I won't be doing them in order. I may even post multiple chapters of a single fic in a row, just depends on what catches my attention.

Ja Ne!