Master (plus) Slave (equals) Boyfriends

Mortal AU - It started out with Nico as Percy's history tutor and then it escalated quickly. Now Nico and Percy are in a D/s relationship. Pure sex, because Percy doesn't want a boyfriend. Nico falls in love for his sub and tries to trick Percy into a relationship. Or: The one where Percy is not as oblivious as everybody thinks. Nico/Percy slash Nicercy