You are an agent in the Federal Bureau of Research and Protection (FBRP). Your job is to protect mankind from various supernatural objects and events. As the player, you will enter a vast, complex, and diverse world that provides an entirely new experience. Know that every choice will affect the story's conclusion.

You are Naoto Jinguji, a talented FBRP researcher with a focus on supernatural beings. You are tasked to study the first live succubus in captivity. As the planes begin to overlap with increasing frequency, the bureau's board of directors is getting anxious and begin pressing you for results, causing you displeasure from the board's ironfisted policies. Faced with a growing amount of sympathy for the succubus, you will have to make choices that may affect your life.