The Demon King's Armory is a special place in the castle that is used to store every kind of weapons and armors. It is only accessible for the people who has the Demon King's permission, and is guarded by countless of High Grade Golems.
Although the Demon King, Ilschevar, doesn't store his treasured weapons there, the quality of the objects stored inside it is not something you can scoff at. Valeria says that the cheapest weapons there are Yellow Rank.
There are 7 ranks of weapons, which this world's people call Relic: Red, Orange, Yellow, Green, Blue, Indigo, and Violet. Despite the rank, only five of them are accessible to people; the rest are said to be myths.
Unlike the others, Ilschevar as a Demon King, possesses 3 Indigo Rank Relics and 1 Violet Rank Relic. He keeps the Violet Rank one by himself, but he keeps the Indigo Rank ones here, thus the tight security.
