Hamachika Saika was an ordinary girl living a seemingly normal life, aside from her obsession with using and manipulating others for her bidding. She is unwillingly forced into a fight to the death, with absolute maniacs that have the so called "Future Diaries" who want the title of Deus, God of Time and Space. Despite being 15 years of age, she's more than willing to get her hands dirty to ensure her survival in the game. The question is...,will her wits be enough to save her?