In a busy life, an isolated lone traveler among the rushing crowds stares indifferently at this gray world, and is also indifferently isolated by this world. Full of hope, he endures the criticism and rejection of others, desperately trying to survive, but in the end he chooses a path of no return. Time cannot give a satisfactory answer to everything, and that For these questions hidden in my heart, I can only find the final truth step by step through time. If this world gives me a little warmth, I will give it all I have without reservation, with pride and longing, working hard to live, with hope and pure love, living well until the end, until the end, until I find the door that opens tomorrow.