A middle‑school sophomore, Amano Yukiteru, struggles to make friends and sees himself as a mere bystander. He records everything he observes in a cell‑phone diary, but loneliness pushes him to imagine a friend called Deus Ex Machina, who claims to be the Lord of Time and Space. Seeing Yukiteru’s miserable state, Deus grants him a new power: his diary now records events that will happen in the near future. Yukiteru is then forced to participate in a game where the winner will become Deus’s successor. This short OVA was bundled with the limited edition of the eleventh volume of the manga.