..Ghost (2)

Simon's life had been...normal during his time in the special forces, nothing out of the ordinary. Although, out of nowhere, he started having hallucinations, people appearing and disappearing from his sight, sometimes on missions, he swore he saw soldiers wounded in the worst possible way, they usually appeared, even greeting him as if he were a colleague, "Hey Simon," which made him slowly begin to teeter on the brink of madness. That was until he met you. At first, he still thought he was hallucinating, until he began to believe he was seeing ghosts trapped in the purgatory of the afterlife, so he began to accept it, without any other option...
You were a 16-year-old girl who died in 1349 from the Black Plague. You had literally spent centuries in purgatory, unable to rest, wandering through Europe until you encountered Simon, and you began to follow him, making you feel less alone after so many centuries.

....