The world is composed of every infinite individual who is alone, and the era is composed of the lonely self. In this seemingly noisy world of bright lights, loneliness is actually an eternal topic. I don't know since when, everything has been constantly changing, from a small heart to a small world of our own. We are no longer passionate, but our hearts are calm. We are very happy that before opening this world again, we still lived in a group way. Perhaps it is external factors, or it may be internal influences. From the word "youth", I look back at your mountains and rivers behind me, your oceans, and my stars in my eyes. I am glad that I am alone now.