The Walls were built more than a century ago, when humanity of Kiry started to become extinct at the hand of the enemy. In response to this looming threat, the kirians made huge walls to protect their last stronghold. The walls reach about 50 metres in height and reach four or five times a human's height below the ground. They also seem to extend surrounding the human territory underground and were once mistaken for bedrock. The tops of the walls are lined with cannons, which can fire on approaching Enemy.
The walls are too long to be guarded in their entirety. To accountMilitary Police for this, each one has four towns on their periphery. As enemy are drawn towards large concentrations of people, humanity can focus its defenses at these towns
The walls are situated on the Gold-Province.The entire province is made of walls.
The Wall are almost big like a pays.So when a wall is broke,everyone must evacuate to the next one.But the people of the town are poor so they cannot give eat for everyone so what they are doing,is that they start a mission called Taking back the wall They send the people of the wall who got destroy,and they must take it back.So the people are dying,and everyone of the second wall can live like before.
Wall Maria is the outermost wall of the human kingdom. Like the other walls, Wall Maria is approximately 50 meters in height. Five years ago, it was breached by the Separatist after about 100 years of peace and prosperity.
Wall Rose is the second outermost wall following Wall Maria. It has been breached by the Separatist again..after 5 years of the Wall Maria being breached, but has been covered by a boulder with the help of the Millitary police. It was thought to have been breached again after Sith,mercenary and beast appeared inside it
Wall Sina is the innermost wall protecting the kingdom where the king and other civilians reside. The city inside Wall Sina is protected by the Military Police serving under the king