Life is an endless battle. 
A battle for a better life.
A battle for maintaining happiness.
A battle for peace.

Shin's a 12-year old youth, fighting since the moment he was born for a better life. Dreaming and wishing for a happy life, but he can't see himself in that kind of position. 
Shin's looking at the empty dark sky, breathing his last breaths, still dreaming and wishing for a better life.