In the endless sea of the multiverse, stories are changed by removing or adding new things from the og prime universe but further the branches goes out, things change so much and for the worst...like this one dark universe, Twilight as a human engineer and known as Aaira Kaison, is on a repair mission with her friends to the Equestria Runner. As she got a message from her lover, Faye, this universe Fluttershy. telling her she's in trouble and something wrong on the ship.
Aaira and her friends steps into the beginning of the greatest nightmare that this universe will ever see. Will Aaira make them whole? MAKE THEM WHOLE! MAKE US WHOLE!

Spin off from "Your Name Across The Multiverse", as it follows a AU human Twilight as she's this universe Issac from Dead Space. This isn't a 100% 1 to 1 retelling but slightly my new take on it.
(Why isn't there a Dead Space tag? This can't be the first Dead Space fic on here lol)