A ghost who has forgotten his past life, a ghost who just follows the shadow of others. Is there any unfinished fate in the world? What is the reason why he refuses to leave? Maybe it's love, maybe it's family affection. Whatever we lose, we will gain. The same principle proves that whatever we gain, we will also lose. In any case, it is easiest for those who leave, and it is hardest for those who survive, but for the sake of that heavy heart, we persevere.