in the end the main character said "maybe i just stopped noticing"
i think it is because no he is lost in the world
the story starts out on the beach meaning he was still young
but as the story goes on he gets older and at the end he is an adult
the goes to work on the train.
now hes in the adult world he cant have as much fun as he did when he was young.
and he lives in a boring world now
cross culture
kid world→adult world