Is the reunion a few years later a trial of old memories or is it just a coincidence? Reunion and separation seem to have become an eternal law between two people. Is it the heart or the helplessness of reality that causes the two people to drift apart? Perhaps it would be the best ending for him to leave that time and never show up again, but I understand that even if what he throws is arsenic, I will still be happy with it... There is nothing wrong with continuing to be entangled like this, at least the two of them have intersection...