"I don't know where love comes from, but it grows deeper and deeper." When she first met him, she was at the age when she was "forced to express her sorrows in order to compose new words". Feel the sadness of lovesickness in the short farewell, enjoy the sweetness of love in the short reunion, there is staying together, there is betrayal, there is waiting, there is despair... They all bear it alone and grow up slowly. Going around in circles and wasting time, after all, everything is in vain.