a sprawling utopia floating freely across the Atlantic Ocean. People here live in harmony, with low crime rates, a stable economy, and not a soul in the city going to bed without dinner. Hardly a thing goes wrong in this city. Hardly a thing, that is, in the surface. Like most great things, Olympus has a dark side, unknown to many of it's citizens, and even leaders. Invisible to the normal human eye, Oni are terrible monsters who stalk the streets and attack the unsuspecting, either killing them on spot, and cursing them to do evil against those around them. With so many going unnoticed, you'd think it would be more of a problem, right? Thankfully, the terrible beasts aren't running around without a threat – children of all ages from around the city not only have been given the abilities to see them, but also defeat them and bring safety to the city! Even more than that, whoever can kill the highest number of Oni will be showered in fabulous rewards! It's a race to the top in Olympus - will you be the Grand Victor?