This story is about a boy and the lost thing who was found by a boy. He found that lost thing on the beach, and he got friendly with it. He tried to research what its true character is, but he wasn't able to find the truth and he carried it to his home. Naturally, his parents opposeed to keeping it, so he took it to a organization which receive strange creatures. At that organization, he was given an advice to leave there if he really likes it. He followed to that advise and also he got some sign. Following that sign, they finally arrived at the place where many kinds of wired creatures which looks simmilar to the lost thing.
At the end of the story, a boy said that he became unnotice to the thing which is very wired. I think it means that he bacame an adult and forogot his pure heart. Moreover, we thought that the lost thing embodies youth, imagination and innocence. This means that because he became an adult, he lost his treasure.
