The author of this article really hasn't conceived it yet, but he won't give up! ! ! This is a story about missing out. In this world, there are always some things that are beyond our control. Such as accidents, such as love. You never know which one comes first, the accident or tomorrow. Just as you don't know, if a person you meet by chance on the street one day may be the partner you want to spend your life with in the future. The encounter came too unexpectedly. Suddenly, before we are ready, it disappears quietly.