Magic Crystals are to the people of this world, what fuel and is to ours. Mined from "Shattered Lands", Magic Crystals can power various machines with energy, from simple carriages, to monolithic airships, and even complex Magi-Armors used by knights all over the world.

Magi-Armors are multipurpose machines piloted by the knights and nobles of the world. Due to the way they are controlled, Magi-Armors almost invariably take a humanoid form, so that the pilot has little trouble operating the machine. However, there are models that take more exotic non-humanoid forms, but these are specialized machines that require more training to use than a normal humanoid one.

Magi-Armors are powered by a large Magic Crystal Reactor, which provides the necessary magical energy to move the large and complex machinery that comprise the armor. The more powerful the Crystal Reactor, the greater its performance, but also the greater the strain the pilot has to bear.

Because of its power source and piloting mechanism, Magi-Armor pilots require some affinity with magic in order to properly control the machine. A pilot with high magical affinity can control his/her machine with far more precision than those with lower magical affinity. This is because the pilot themselves must channel some magical energy from themselves and into the machines, and pilots with lower magical affinity can channel far less than others with higher affinity.