Device

Device is an ability used by Blazers.

Summary
Devices are weapons used by Blazers. They are the materialization of a Blazer's soul as a weapon to be used in battle. A Device can take different forms and abilities depending on the Blazer themselves. In the past, Devices were known for items such as “Holy Sword”, “Demon Bow”, “Cursed Tool”, “Blessed Tool” etc. Devices can range from simple weapons such as swords or spears to more modern weapons such as firearms and chainsaws. Devices can even take the form of other types of objects that are related to their abilities; such as Sara Bloodlily's Device being a palette and paint brush.

Devices are very sturdy and can withstand a great deal of damage without bending or breaking. However, in rare cases where they do break, the damage would affect the Blazer as well because Devices are connected to the Blazers soul. This usually leads to the Blazer losing consciousness. As well, the limit of how many Devices a Blazer can summon is different from person to person. While most can summon one or two of their respected Device's, some can summon multiple copies.

A Device can take either an  for practice or mock battles or  for real battles. Device's in Illusionary Form can't cause any physical damage to people, instead, they damage the target's stamina. This is why Illusionary Form is used during mock battles and when a Blazer isn't trying to kill someone or just not being allowed to kill. Although Illusionary Form can't kill someone, an overwhelming enough attack can put someone into a comatose state.

A Device also serves as a medium for Blazers to use to use their Noble Arts, which are the manifestation of the Blazers' abilities. Some Devices can even have abilities as well for the Blazer to make uses of. A prime example being Kuraudo Kurashiki's Orochimaru which can extend and move at will.

There seem to be cases where some Devices have a certain level of sentience as Kuraudo Kurashiki's Orochimaru has shown to have a will where it is hostile towards Kuraudo as, when it was summoned, Orochimaru initially attacked its Blazer. It should be noted, however, that this is an anime-only inclusion and no other instances have been seen.

Soul Evolution
While it rare, its possible for a person's Device to change or evolve. This is because a Device reflects the Blazers inner spirit and everything about them. Therefore, if the Blazer completely "rebuilds" them self, their Device will change as well. This also includes how many of their Devices they can summon.

Trivia

 * In the anime, summoning Device's are sometime made more dramatic. For example, Ikki would "draw" his device like he would for a normal sword from its' scabbard.