In a time of war, you are left alone in the pigeon coop 'Sign White' after the death of your benefactor. Exhausted from the long days of war and death, you write one last letter and send it flying, The pigeons, flying free, miraculously reach the people who were lost too... From that day, you continue to write letters. To someone you know neither face nor name. “Sign White” is a visual novel based on the system of sending and receiving letters via pigeons, and the protagonist interacts with three characters. The protagonist grows by interacting with the characters in the letters, and also has the option to change their lives by giving them direction or sharing advice. Keep connecting with people. Make a difference on the battlefield, touch someone's life, change the fate of a province. Where will “Sign White” and its three characters end up in the end?