Epigraph Trilogy

The Epigraph Trilogy is an unofficial name given to the trilogy made up of the light novels Heiji Kyokusen no Epigraph, Eigou Kaiki no Pandora, and Mugen Enten no Altair. The former two titles were later adapted into manga. As a promotion for the series, an image song called Geometric Space was released. The three volumes were collected in a limited box set of the limited releases, including a spin-off Drama CD with per volume.

The trilogy focuses on the story of the Rintaro Okabe who failed to save Kurisu Makise on the Beta Attractor Field and gave up. The series depicts the effects of him giving up and the inevitable arrival of World War III.

The Epigraph Trilogy served as the basis for Steins;Gate 0.