The show must go on
Almost a year after the conclusion of the Case, Yu Narukami wakes up on the train on the day his Inaba adventure begins. He has been sent back in time. He doesn't know what happened, he doesn't know why, he only knows that nobody remembers him. His Social Links are reset. All he can do is rebuild his relationships and unravel the mystery that brought him back to Inaba in 2011, along with the only person who remembers him. Too bad that person is Tohru Adachi.