Once upon a time, there was a moment when no two humans were the same, when they all had flaws, and no one was pretty. When the world was at war. The world was ending, Nuclear, atomic, and hydrogen bomb exploding in every country, on every continent. Some call the scientist who made the disease gods, others demons. But they were just humans, no more, no less. With the world at war, someone had to stop it. But, how? Get rid of the ones who started it. Well, who was it? Well, North America of course, kill them all, then the war will be over. Right?
So they set to work, they produced a chemical the caused skin to melt off, but that was riddled to aggressive. So they set to work again, this time, they founded the X7XC bomb. Full of enough radiation, chemicals, and explosives to completely whip out North and South America. Rejected of course, no need to harm South America. Then finally, they made a drug, or a disease, that would spread and kill everyone, in a very mild way of course. But that's not what happened.
They released this "drug" through small bombs. It spread and spread, everywhere it went, killing people painfully. First you would start coughing up blood, then you would blister, and eventually your skin would separate and fall off your body. No, you're not dead yet, you're still alive, watching yourself burn and bleed. And once it's been about five minutes, you would die.
Every symptom occurred within the first five minutes. As it spread, more and more did the fatalities go up. Soon the population read 3, 475, 983 persons left. All of this in exactly five minutes.
But what about the people who didn't die? They changed, dramatically. The "drug" changed their entire genetic and DNA codes. Everyone was changed. Hair began to range itself from the entire rainbow, skin as well, eyes, lips, fingernails, everything. The average height became taller! The shortest person in the world was 5'7'.
All of the remaining humans gathered unto one continent, North America. Coming together to live in peace. Everyone in this new world was different, but everyone was also all very similar all at the same time. But of course, that would never last. They soon categorized everyone into three races, No-nans, Excel, and Axons. No-nans only ranging of 600 persons, had no hair what so ever. Axons, ranging of about 1,000,000 persons, only had hair on their scalps. The Excel, everyone left, were the same as the old humans hair wise. These groups were created for strictly social purposes. This enraged many, mostly Excel who got nothing and were treated as the lower class of this new found society.
Years passed, and soon everyone forgot about the past before the changing. The past that is taught in schools was a manipulated past. The "New past" seemingly simulating an era of peace. No one remembering the wars, or when billions upon billions, suffered and then died.