Namjoon darts down the stairs of an apartment from the 13th floor. He collapses in the shadow of the entrance. He explains how he had started working part-time in order to pay for electricity, gas and hospital bills. His mother has already quit her job at the restaurant , so Namjoon convinces his boss to hire a middle schooler in order to pay expenses. He gets up again and motivates himself by saying “ I can do it.”