Frowning in Vain

If we meet just to say goodbye, then why should we never leave and make a life-or-death vow? The mantis stalks the cicada, but who is the hunter? What happens when a cat falls in love with a mouse? Who is behind the scenes? He was a policeman with great ambitions; he was a prince who was famous all over the world; and he was a complicated and beautiful man... And she was just a low-key passerby who didn't want to be contaminated by the emotions of the world...