Everyone was born with a mark.
It could be anything; any shape, any hue, any subject, and on any part of the body. Some people paraded theirs openly, others kept theirs quiet. There were those who covered it up and pretended the whole soulmate thing didn't exist, and those who worshipped the marks like the Aztecs used to worship the sun, with an almost cult-like obsession. Only two people in the world had the exact same mark, branding them what had come to be known as soulmates.
Overwatch Soulmates AU