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Title: Like Cats and Dogs – The Top Dog Seduced By the Kitten

Fandom: Percy Jackson and the Olympians / Heroes of Olympus; post post apocalyptic AU

Disclaimer: All rights reserved to Rick Riordan for he created the awesomeness that is Nico di Angelo. And everything else related to Percy Jackson and the Olympians / Heroes of Olympus. Aside from the Gods, they belong to the old Greeks. This fanfiction and its OCs on the other hand are entirely mine. No money is made with this, though reviews are more than welcomed.

Warnings: shounen-ai, slavery, catboys/girls, dogboys/girls, explicit intercourse, anal, heat, knotting, D/s, collar, mpreg, shoujo-ai, hetero, threesome

Main Pairing: Nico/Percy

Side Pairings: Bianca/Thalia, Reyna/Piper/Annabeth, Frank/Hazel/Leo, Jake/Will, Ethan/Alabaster, Octavian/Luke/Jason, Charles/Silena, Chris/Clarisse

Percy Jackson Characters: Perseus Jackson, Nico di Angelo, Bianca di Angelo, Hazel Levesque, Frank Zhang, Leo Valdez, Jake Mason, Will Solace, Thalia Grace, Jason Grace, Reyna Avila Ramírez-Arellano, Annabeth Chase, Piper McLean, Octavian Simmons, Luke Castellan, Cecil Rogers, Ethan Nakamura, Alabaster C. Torrington, Lou Ellen, Charles Beckendorf, Silena Beauregard, Chris Rodriguez, Clarisse la Rue

Summary: In a world wrecked by a human experiment gone wrong – many humans died and the genes of others merged with animals – the world is ruled by so-called Dog Humas, humans with dog-traits. They're a dominant race that keeps all others in check. Humans can be glad to work under a Dog Huma. There are others though. Human DNA mixed with cat DNA. Cat Humas are a naturally submissive race and while humans are glad to work for Dog Humas, Cat Humas are no more than sex-slaves and pets. The world is a harsh and strict place.

And even though Nico di Angelo is one of the absolute top dogs around, the senior partner of the best law firm, he has a soft spot for Cat Humas and thinks they shouldn't be treated the way they are. So when his errand boy Percy Jackson collapses in his office after having taken bad heat suppressants and Nico discovers that the supposed human is a cat, it changes Nico's life forever.

Like Cats and Dogs

The Top Dog Seduced By the Kitten

Prologue: Separation by War

Two hundred years ago, humans wrecked the world and nearly caused their own demise.

In their greedy attempt to achieve immortality, their top scientists had started doing human experimentation. The DNA of animals that were known for their regenerative abilities was crossed with human DNA. Over the years, the experiment seemed to achieve more and more recognition. They seemed so short of a break-through when all hell broke loose. What was supposed to grand humans immortality mutated into a deadly virus.

Millions of infected humans died. Others suffered from side-effects, their genes mutating from the exposure to different animals' DNA. Forth came various different hybrid-races, many of those dying soon after due to not being viable. Others were stomped out by scared humans who saw them as monsters. And then there were those that survived the time and trials, calling themselves Humas.

While the human race was weakened due to the losses of the virus and the Human-Huma-Wars that had followed, one race in particular grew in strength and numbers. The Dog Humas. A side-effect of the DNA mingling between human and dog was that the Dog Humas had turned out to be a naturally strong and dominant race. While humans were sidetracked by fighting other Humas, the dog-race evolved and strengthened themselves. They found their perfect match. Where Dog Humas were naturally dominant, Cat Humas had turned out to be naturally submissive and overly fertile. When it became popular knowledge that Humas born to a naturally submissive were stronger, when other races noticed how sweet and delectable naturally submissives were, they got captured. Used for breeding, sold as sex-slaves, held for carnal pleasure. Many dominant races gained numbers and strength by using submissives for breeding and the race that came out the strongest from that were the Dog Humas. They used their advantage and the fact that humans were weakened after the previous fights with other Humas and the losses from the virus gone haywire and the Dog Humas came out victoriously from the so called Great Human War.

That war laid a hundred years in the past.

The world slowly recovered from the aftermath of the virus and the many battles and wars. Society reformed, but in a new way. Dog Humas had taken over North America. Communication between the different continents had picked up about fifty years ago and other dominant Huma races had taken over other former countries. Humans, the minority in the world by now, could live a relatively peaceful life as long as they followed the rules and laws set by the Humas, but they could never take on leading positions or be politicians. Only dominant Humas could. And while North America was worldwide known as the United States of Dog Humas, other dominant Humas were living there too. So were submissive Humas, the most popular being Cat Humas. Others existed – Bunny Humas were wildly popular in Europe, for example – but ever since before the Great Human War, cats had the greatest population in North America. Though due to their submissive nature, they were even more limited than humans actually. They were too precious to be endangered, so generally they were kept safe in auction houses until they were owned by a dominant. As long as a submissive was claimed and had their mate's permission, they could work and roam the city freely and could do pretty much all they wanted. And like that, society had found a new, rocky stability.

One that did not sit well with everyone.

Nico di Angelo was one of the Dog Humas who disagreed with the treatment of submissives. He personally didn't care too much for humans – there were decent and good humans, but generally speaking, he figured they were to be blamed for their own fate, because it was their greed that had nearly doomed them all. But Cat Humas weren't any different than Dog Humas. They had gotten their DNA screwed with by humans, they had to somehow survive, but now they were owned as pets. Somehow, Nico understood that during the times of war, it was a necessary evil that they were used for breeding, but he personally thought that by now, they were trying to hold up a civilized society and slavery in any form should not be part of that. So-called traditionalists defended themselves and argued how much freedom submissives had gained over the past decades. That they were allowed so many things, as long as they had a dominant to 'provide for them and protect them', that it all was for the best of the submissives. Because on their own, submissives would be completely lost. They needed the strength and protection of a dominant.

Nico knew enough submissives who would easily scratch out eyes for such comments. In his experience, submissives were actually quite head-strong and very clever. They had nothing on the physical strength of dominants and okay, when they went into heat, they were very vulnerable and defenseless and in that time, they truly did need protection. But in his mind, the overall goal should be to achieve a world where submissives could safely walk around and instead of fearing the attacks of horny dominants, expect the protection of other dominants simply because they were all Humas and they should all support each other. He knew that was painfully unrealistic and he was being a hopeless dreamer, but he couldn't really help it. He had always suffered from a strong sense of justice. It was what made him such a stellar lawyer. That and that he was a very strong Dog Huma. His family practically ruled Neo New York. He had money, fame, a good family, wonderful friends, the status that was most desirable in North America. All he was missing was true love, a mate.


Author's note: Originally, this was supposed to be a oneshot, but I felt that with creating this elaborate world, it would have been too much at once to try and squeeze it all into one shot. So here you go, first digest the world I've created and then you get to meet Nico the grumpy lawyer and Percy the obedient, timid little human errand boy (or so Nico thinks, hah, the poor fool).

Next thing I'll update will be "Chasing Fireflies" on Wednesday!