"Angel Game"—a game where you'll gain the ability to generate certain powers and elements with an elusive rune circle on the left palm of your hand—known as the "Angel's Heart"—something that no average human can do. However, to "play" the game; one must fit a single criterion—where all wielders of this power are required to have a certain "misfortune" in life. Players also have no control over whether to obtain or desire these powers by choice either, as the Angel's Heart can only mysteriously and spontaneously appear on the left palm of these unfortunates, often against their expectations. In the year 200X, due to various cases of mishandling of powers via vandalism and crimes—wielders of the Angel's Heart are now loathed by society and the government had to step in to limit Angel Game as a mere competitive sport—where Angel Game players can only use such powers against each other under monitored tournament conditions and rules: something everyone is still debating whether it's the right decision to do, knowing the "prices" the players had to pay to obtain such powers unwillingly... Is it a gift for the unfortunate, or the cause of these misfortunes? Is it right or wrong to limit such powers that could revolutionize mankind for all eternity as a mere "game"? Just what is the true purpose of Angel Game, to this world...?