"What have you been waiting for?"
"Waiting for you to find me"
"Then I'm already here, why are you leaving?"
"Because I found you not worthy of my staying."
"..."
"Before I met you, I was waiting. Just when I thought I couldn't wait, you appeared, but now..." I want to leave you.
Four years have made Ji Minghan understand - if you love her, you must not let her go, otherwise you will regret it.
Is it too late?