Fate Written On Your Skin

Soulmates could communicate with each other by writing on their own skin, making the writing appear on their soulmate's body. As a child, Nico never got an answer. Now, he is too afraid because his soulmate is a boy and then too angry because of Bianca's death. Until the gods steal his soulmate and writing to him becomes the only means to reach Percy. Nico/Percy slash Nicercy