Teigu

The Teigu are mysterious and extremely powerful relics that exist in the world of Akame Ga Kill! They are rare and only the strongest of warriors are able to wield them. Some have the appearance of equipment or weapons, while others seem to resemble living creatures. It is hinted that a form of magic is used to create them. Many weapon and Armor type Teigu are forged from a rare metal called "Orihalcon".

While the Teigu give its user amazing powers, they are not almighty. It is stated that there is no Teigu that can bring the dead back to life. Even if a user is strong enough to use a Teigu, it can still reject him, as a user's first impression of it affects it's compatibility. The user of a Teigu must be compatible with the Teigu to wield it.

Many Teigu were created from the remains of Danger Beast that had unique powers, imbuing the equipment with special abilities. A Teigu is not limited to one ability, some Teigu are known to have secret powers that have yet to be discovered and some whose powers have been lost to History.

Biological Teigu are shown to be strong but not indestructible, if their core is destroyed then so is the Teigu.

History
The Teigu were created when the First Emperor who created the empire was afraid that the empire would eventually fall. To prevent this, he ordered many scientists to make strong weapons and defenses. Thus, the Teigu were created. There are 48 total Teigu in all, but almost half of them were lost during a civil war about 500 years ago.

Known Teigu

 * 1) Tatsumi | Braht - Demon Armor: Incursio
 * 2) Akame - One Cut Killer: Murasame
 * 3) Kurome - March of the Dead: Yatsufusa
 * 4) Wave - Demon Armor: Grand Chariot
 * 5) Mein - Roman Artillery: Pumpkin
 * 6) Rabac - Infinite Uses: Cross Tail
 * 7) Bors - Purgatory's Invitation: Rubicante
 * 8) Ran - Soaring for Thousands of Miles: Mastema
 * 9) Seryuu - Hekatonkheires aka "Koro"
 * 10) Leone - Animal King: Lionelle
 * 11) Najenda - The Speed of Lightning: Susanoo
 * 12) Chelsea - Gaea Foundation
 * 13) Esdese - Demon's Extract
 * 14) Shura - Shambhala
 * 15) River - Black Marlin
 * 16) Daidara - Double Bladed Axe: Belvaac
 * 17) Nyau - Scream
 * 18) Dr. Stylish - Glorious Hands of God: Perfector
 * 19) Zank the Beheader - Spectator
 * 20) Schere | Kaku - Cutter of Creation: Ecstasy