Subject 157X2Z (Nicercy love story)

Percy Jackson, known as Subject 157X27, has been trapped in a secret laboratory since he was 13 for 3 years. Finally being able to escape his prison, Percy encounters three teenagers (Annabeth, Grover, and Nico) who will try to help him at all costs. But what they didn't expect, mainly Nico, is that Percy was psychic.
And Percy didn't expect to find others like him.

(Warning: This story contains OCs! And they have a big part in this story!)