25 parts Complete MatureSoulmate worlds seem too good to be true, don't they?
Supposedly, what you write on your skin, appears on your soulmate's. What happens when a few things get in the way and Louis and Harry are too oblivious to notice?
There are warnings before triggering content so you can skip it. Be careful reading.
!!! : triggering content
###: NSFW
This fic can also be found on AO3.