Soon after falling into another world, Kurumi Tokisaki takes interest in a particular white cat. Much to Kurumi's disappointment, the two part ways. Kurumi later meets Hibiki Higoromo, a white haired quasi-spirit. Hibiki explains that they are at the center of a killing game between quasi-spirits. Within the Neighboring World, the spirits compete for a single wish to be granted to the lone survivor of the death-match. Understanding the rules of the game, Kurumi and Hibiki reach a compromise—a temporary alliance.

Shortly after waking up in an unknown street with no clothes or memories, Retro and Pandy team up and begin a life of thrill chasing and violence. Retro's wild antics and Pandy's carefree personality make them the perfect partners in crime to cause mayhem wherever they strike. When an accidental mistake lands them behind bars, Retro and Pandy are sent to Dead Leaves—a high-security prison on the Moon. Once there, they soon discover that the other inmates are clones, all products of genetic mutation experiments. With nothing better to do, they escape from their cell and lead a prison break with the other captives. Armed with a crew of mutants and a hunger for havoc, the chaotic duo begins their wacky escape.

Two men have just arrived at a location known as Quindecim and are unable to remember how they got there. They are immediately greeted by a young woman who escorts them to a small bar, where a bartender awaits them. They are told that they will have to participate in a game, randomly chosen by roulette, and will be unable to leave until its completion; if they refuse, the consequences will be dire. In addition to the rules of the game, the two men are told to play as if their lives are at stake. The game that has been chosen is billiards. But there's more to it than just pocketing pool balls, as the two are about to find out the outcome could mean life or death.

Deemo is a mystic character lives in solitude, a castle, all by itself. A little girl falls from the sky, not knowing who she is, where she comes from. To help the little girl back to her world, Deemo comes to realize a tree keeps growing tall on top of the piano whenever it plays. What would Deemo do when it gets comfortable with the companionship it never had before? What if the little girl couldn't deal with the truth when her seemingly lost memories regained?! (Source: Official Site)