The year was 2020 an event occurred causing people to mutate and become beastkin the ones that didn’t mutate gained powers becoming heroes and villains. Villains, beastkin and heroes are ranked from F to SSS.

Long ago the 5 greatest heroes Kronos, Zeus, Hades, Poseidon, Aphrodites the 5 greatest villains puppeteer, plague, which, chaos, mechanic and the five strongest beastkin Dragon, Phoenix, kaiju, amoeba, and Voidling got corrupted becoming the 15 calamities each having the power to destroy the world the calamities were sealed 3000 years ago including there soul weapons

Hero and villains have a core in their heart. These cores are the source of all super powers. These cores are now called power cores. A person without a power core can claim the ability inside. A people can only have one power in their body. Beastkin doesn’t have a power core. Their body’s act like a power core.

Heroes and villains can strengthen their powers by earning monster gems. A monster gem is where a monsters stories its power. Monsters are classified from white to black white being the weakest. Monster gems take on many shapes.

Beastkin are half animal hybrids. Beastkin normally look mostly human with some animal treats. Some can fully control their bodies going fully beast or fully human