The Rubrum Columbae

Human have long history until they reaching this age. A great war that happen a centuries ago is one of the history. Even when the age of war had been passed, the dark cloud are still lingering until this day.

Yusa has spent these past six years training to be a splendid spy for his country. At the age of six, he was adopted from an orphanage and go to the camp. He was given a mission to tracking a goverment member that has been suspected to do an embezzlement, and then a certain incident happened.

He tried to remember but, when he opened his eyes the world that he sees are different from what he know. A world that darkest than his world.

Yusa only have one choices, and the choice that he make is to fight from the shadow.