Just The Name

Soulmate au where they have the first name of their soulmates written on the backs of their hands. After you meet your soulmate and make physical contact with them, your name begins to glow in a random colour. However, statistically finding your soulmate is slim to none. Which is why it's very peculiar when 10 people (5 couples) all meet their soulmates in the same place, around the same time.

Johnlock
Destiel
Sabriel
Mystrade
Mary (Watson) and some character that doesn't exist in either of the fandoms this is focusing on