In ancient times, there was Boya Ziqi, and today there is Lin Chen Changsu. This world is balanced, but not fair... Mei Changsu exchanged Lin Shu's whole world for Lin Chen. With him accompanying him on that difficult and long road, Mei Changsu felt lonely. Lin Chen was the person Mei Changsu was closest to, the person he trusted the most, and the person he relied on the most... He was just his Changsu...