Once sin has its beginning, it is difficult to end it. All your things have been given to me, and I have only one thing to give you, and that is death. It is not my sin to cause a disaster of killings; it is my sin to meet you... Returning to a person's palace, and sinking into endless regret again, I understand more and more that it is impossible, and what is lost can never be recovered again. ——There are some stories in the world that you don't want to read again because there is no solution. Some stories seem destined, not by chance or miss, but by an unsolvable knot. If it happens to be a tragedy, its sadness is already determined at the beginning of the story. Although a lifetime is long, it passes by in a blink of an eye. You will keep meeting some people, and you will keep saying goodbye to some people, from strangers to familiarity, from familiarity to strangers again, from being familiar with each other to parting ways, from seeing each other too late to not seeing each other at all... Not everyone will be your partner, and not every friend can meet each other heartily, without worries or worries.