Regret messege of an express engine (oneshot au)

please read this first.just to remind you guys THIS IS NOT MY ORIGINAL IDEA the author of the story is Morally Drancoequus on FanFiction.the reason why I'm doing this because some people can't read it on the original site so I decided to put it here on wattpad.also the black lines are the lyrics of "regret messege" covered by lizz Robinette on YouTube.thats all please enjoy