Steins;Gate 0(2018)

The dark and untold story of Steins Gate, which ends with Okabe, the mad scientist, trying to forget his failure to save Makise Koriso. He decides to be carefree and in order to be able to forget all that incident, he abandons the character of Okabe Dashmand and changes. When everything seems to be normal, Okabe meets one of Makise's colleagues, and faces his past again. The colleague also tells Okabe that they are testing a new device that can store people's memories...