Mortals Meet Percabeth + one shots and headcannons

Percy's change

Nico couldn't stand it. After Tartarus, Percy had become very moody and distant and acted like nothing had happened but Nico knew different. One day, after the campfire, he barged into Percy's cabin and shoved a plastic toy into Percy's hand. When Percy looked at the figurine of Poseidon, he said "I don't have times for your childish games Nico". Now the situation of two years ago was reversed. Instead of getting mad, Nico smiled and replied "Maybe it's good to be a kid once in a while."