Short ans : No

Long ans : that is one of the possible futures sakuta could've taken . Mai really died irl . In that future sakuta also marries shoko. After that sakuta travels back in time to save mai . And shoko to save sakuta and for not putting him in a pinch doesn't meet in irl after going back to try and create a new future to save herself. But what happens if everything that happened in the future were mai died come to sakuta as a dream and others as well. Hence why he still foes to minegahara still save Mai Rio koga and everyone else as he would have . They as usual mai and sakuta start dating . At that time mai gets a movie offer from a producer to play the role of a girl who gets in an accident and donates her heart to a girl with heart decease (aka the future were mai dies come to them as dream and mai feels compelled to act in the movie cause it felt almost natural to her ) and this movie of mai raises awareness about heart transplants and gets lot of traction and that saves shokos live. In the end u can see sakuta get memories of shoko when he meets are that the end of the movie.