It is said that small bits of info about your soulmate will slowly appear on your body until you figure out who it is, the closer you are to them the more you learn about them, the first bit of info is the gender which is a given when weather you know them or not, both Karma and Nagisa have male soulmates, and so they both try and figure it out, but in reality they've been staring the answer in the face the whole time....each other.