Blazer

"Blazers: a special being who can manifest one's own soul as armor and control superpowers with one's magical power."

- Ikki Kurogane Blazer are a special-breed of humans born with magic.

Summary
In the past, they were first referred to as magicians and witches, Blazers are irregular people found in one-in-a-thousand born with magic, they are able to materialize their soul as a weapon referred to as Devices. The strongest of them could control time such as Kurono Shinguuji using their abilities, which science is unable to explain, even the weakest among them were considered superhuman.

Nowadays, all national militaries and local police force require Blazers, but as a result of the laws referred to as the Mage-Knight System, in which a Blazer would need to graduate from an internationally improved vocational school to receive their license and social status as Mage Knights thus receiving approval to use their abilities.

Though the magic of a Blazer is stated to be fixed at birth and it couldn't be increased no matter their training. It is later stated to be the limit that the world would allow and reaching the full extent of their potential would mean that they couldn't get improve anymore, however, if they were to break those chains would result in them stepping into the domain of a demon.

Ranks
In order to evaluate and manage the abilities of Blazers, in which the highest is A-Rank and the lowest is F-Rank. Their ability determines their most appropriate place in the hierarchy so that harmony can be maintained, as such ones' rank is fixed and rarely changed. The ranks are determined from six attributes:
 * 1) Offensive Power
 * 2) Defensive Power
 * 3) Mana Quantity
 * 4) Mana Control
 * 5) Physical Ability
 * 6) Luck

C-Rank Blazers and above are considered to be Rare especially an A-Rank. It has been mentioned that there are at least five C-Rank students present among the 250 students and for at least one Mage-Knight Schools in Japan to have even one B-Rank student is considered lucky.

Known Blazers
Unknown Ranks
 * Bakuga Tsukikage
 * Bishou
 * Edelweiss
 * Itsuki Kurogane
 * Tyrant
 * Arthur Bright
 * Abraham Carter
 * Norman Creed
 * Or-Gaule (Deceased †)
 * Naseem Al-Salem
 * Ein
 * Big Baby
 * Daniel Dandalion
 * Kagami Kusakabe
 * Mamoru Akaza
 * Ryouma Kurogane (Deceased †)
 * Nangou Torajirou
 * Wallenstein
 * Mikoto Tsuruya
 * Renji Kaga
 * Luke
 * Mira
 * Enalis
 * Lid
 * Fu Xiaoli
 * Ranbalt Raab
 * Yoshikazu Kiba
 * Great Sage

Trivia

 * Mundane skills such as swordsmanship and martial arts aren't included in the evaluation since it is viewed as being useless against magic and noble arts. As such, normal humans who practice swordsmanship such as Kaito Ayatsuji don't receive recognition for their accomplishments, while Blazers who practices either are rare and those such as Yuuri Oreki are viewed as oddballs by other Blazers.
 * The League has theorized that the "demons" from ancient times must've been desperados who lost their humanity, which means that Blazers existed
 * Blazers are called "Psychics" in the US and "Warriors" in China.