Steins;Gate 0

Story

Steins;Gate 0 takes place after a hypothetical bad ending to Steins;Gate, in which the main character Rintaro Okabe is unable to save the life of Kurisu Makise after traveling back in time and gives up. Zero follows the consequences of Rintaro's decision and the impact it has on the world as World War III draws ever closer. A few months later, Rintaro attends a lecture by Alexis Leskinen and Maho Hiyajo from Viktor Chondria University, the university where Kurisu used to work. There he is introduced to Project Amadeus, an advanced artificial intelligence capable of replicating a person based on their memories, using Kurisu's previously published dissertation as a basis. After meeting Maho Hiyajo and Dr. Leskinen, Rintaro is given the opportunity to act as a tester for Amadeus, specifically a version of Amadeus that uses the memories of the late Kurisu Makise.