We met in a song, your name is Shubai, I changed your name to Umbrella Kai. You said my name was Erbi, and I said I searched for you all night and found that poem: Step into a white tree, a bridge of clear rain and an umbrella open. When you sing "Passenger", I swear that in this life, I will be a "passer-by" who will never pass by in your life.