Everyone will have their own youthful and frivolous days. In those days when the clouds were clear and the wind was calm, we were full of passionate passion and vitality. A simple heart, before it is contaminated, releases infinite youthful power. Those who cherish will remember and miss. And it will not help those who regret it. Because no one will pay for an ending that backfires. For this reason, where is the person who can save himself?