The Master Descends the Mountain: My Invincible Senior Sister

Lin Yan was a sick man who suffered from congenital heart disease since he was a child. In order to save his life, his master spent all his savings. He was trafficked by human traffickers when he was five years old, and was later rescued by a mysterious organization. What impressed him most was the senior sister who took good care of him. Now that the King of War has made a strong return, the first thing to do is: "Is there any news about my senior sister?"