Mastema

Thousand-Mile Flight: Mastema is a Teigu that takes the form of two floating discs that sprout wings. It is currently owned by Run.

History
Mastema's origins are unknown, but it came under Run's possession after he seduced his town mayor into giving him a position in the military and a Teigu.

After Run was reanimated as Kurome's corpse puppet, the wings turned from white to black.

Abilities
Mastema allows its user to gain wings which give them the ability to fly for a limited amount of time; Run was shown to be able to fly at high speeds and displayed high maneuverability, as well as the ability to hover. It also enables the user to shoot feathers or launch one of the wings towards enemies, both easily capable of piercing through flesh.

Its Trump Card is called "Divine Wings", which gives the wings the ability to reflect an opponent's attacks. When used, the disks split into segments and the wings turn into which appears to be ethereal substance, which allows them to be shaped into a protective shield.

Trivia

 * Mastema is the name of an angel who persecutes evil in Hebrew folklore.
 * Despite being translated as "Thousand-Mile Flight", a ri (里) is actually an old Japanese unit of distance, equaling approximately 3.927km or 2.44 miles.