20 years ago, the things hiding in the shadows couldn't take it anymore. They were sick of fleeing from the humans they saw as pitiful and weak. They attacked the closest civilizations near them, and in one night, they killed 350 million people. The humans were so lost, terrified and confused. Luckily, the things that got rid of them also came out of the shadows. They were exorcists, hunters, sorcerers, and all three put together, combinations. The exorcists were the Christians, Rome, the Vatican, and priests, bishops, cardinals and the like throughout the world. The hunters were the mobs and mafias, excluding Sicilia's, and the Scottish population plus some Americans. The sorcerers were German, English, Romanians, Greeks, Norwegians, Chinese, and Middle Easterners. The combinations were the onmioji of Japan and the Sicilian mafia. But in 2012, a school was formed by the supernatural heads in New York City for their children. But, oddly enough, the children/teens of the exorcists, hunters, sorcerers, and combos were also invited. This first generation of students are called APH. The school, Hetalia High, is the first step forward to establishing peace with the monsters, killers, and humans.