A character that is between life and death. They died, but still have a link to the world. Which through gathering fragments that links to their life, they slowly regain their memories.
However, it is a race against time. As they will eventually fade away, and those fragments acts as the connection to their life.
Their friends have been looking for them, but they are unable to communicate with them. And witnesses as the reality is warped, and their existence being rewritten itself.
Their existence is an abomination that is also being targeted for elimination. I guess you can say, they are fighting to return.
And the fragments looks to not only cover what they were like, but also seem to be leading up to how they died.