Looking at the elementary schoolers in their colorful T-shirts from various day camps, Percy felt a twinge of sadness. He should be at Camp Half-Blood right now, settling into his cabin for the summer, teaching sword-fighting lessons in the arena, playing pranks on the other counselors. These kids had no idea just how crazy a summer camp could be.
Percy observed elementary school children wearing vibrant T-shirts from their various day camps, which made him feel a sense of longing. He reminisced about his own experiences at Camp Half-Blood, where he should have been spending his summer, engaging in activities he loved, such as sword-fighting and playing pranks on fellow campers.
This contrast between the ordinary summer camp experience of the kids and the thrilling adventures he missed brought a wave of nostalgia to Percy. He realized that these children were oblivious to the extraordinary and chaotic nature of true summer camps, like his beloved Camp Half-Blood.