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 have 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 "God's 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. In the anime, this ability instead allowed Run to break a large stone pillar hurled at him into pieces.

Trivia

 * Mastema is the name of a fallen angel or a demon in Jewish mythology. His character is a personification of the Hebrew word, "mastemah" (משטמה), which can mean "hatred", "hostility", "enmity" or "persecution", and was portrayed as a warrior angel of destruction leading his own army, or as an agent of God that punished evil. This could be a reference to Run's character, as he was a merciless killer despite his angelic appearance and fought against evil both on the Empire's behalf and with his own motivations.
 * 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.
 * In the manga, God's Wings are depicted as yellowish white while in the anime, they are blue.

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Mastema