It tells about every bit of life that happened between a pair of brothers. Some are imaginary and some are real, because there are too many dissatisfactions in reality, because the pressure of life and the pursuit of dreams have become so confusing. Everyone has had the kind of extremely happy life in their imaginations. Since the reality is like this, why bother to pursue something that cannot be obtained? It is better to relive the sweetness that has happened or has never happened in the world of fantasy.