Based off the soulmate alternate universe wherein your soulmate's last words to you are tattooed onto your wrist.

Dan Howell is a hit man, and a good one at that. For months,
he's been tracking a senator by the name of Phil Lester.
It's an average job, nothing too difficult, but for some
reason he feels hesitant to finish it.

BONUS: 

At the end, Dan goes through with the job, and Phil's last words are
the ones on Dan's wrists.