It isn't easy for everyone, and for some, that's quite obvious. No one knows the story of another, and even if that story is told, no one will fully understand it but the ones who experienced it. Even those who have experienced it see it in a different light from those who have gone through the same hardships.
Kio, the main protagonist in this story, writes of his hardships, discoveries, abandonments, and losses in the form of a diary. As each day passes, a new entry is written. As a new entry is written, a harder decision will approach. Should he persist, or should he end it? Will he live, or will he perish?