So this official visual novel sequel actually takes part just before the "true ending" in the prequel where Okabe has undone everything, back in the beta timeline. Kurisu has been murdered and he is so depressed and traumatised that he refuses to try one last time in reaching Steins Gate where World War III never happens. Without...

Norimichi and his friend Yuusuke are both challenged by the girl they like, Nazuna while on pool cleaning duty. She invites the winner out on a date to the see the fireworks but when things go wrong, Norimichi discovers that the glass orb Nazuna had picked up allows him to travel back in time. He decides to use it to correct the problems he...