The 13-year-old Li was selected to play football in Spain. Before leaving, he made a promise with Rin to become the world's first and second scorer. After his brother left, Rin trained harshly on himself, and everything in his life seemed to be centered around football. However, after four years, his brother, who had not had much contact with him, suddenly returned to China. His tired figure came into Rin's eyes. Rin had been chasing Sae's figure all along, and a game became the beginning of crushing Rin and Sae's dreams.
Purpose: On a holiday after the second phase of the Blue Prison plan was launched, Rin secretly traveled from Japan to Spain to watch Sei's game. Faced with Sei who gave up the idea of becoming the world's number one striker together, how could Rin pursue the dream that the two of them had shared?