Speiraskia

The Speiraskia (窓の影（スピラスキア）) is a Black Trigger used by Mira

Appearance
Upon activation it looks like a black ball in her hand.

Background
Its origins are yet to be known.

Plot
It was used by Mira to sneak into Mikado city from Aftokrator's ship without being detected. She also uses it to send trion soldiers into the city from their ship. After Yoneya Later, she killed Enedra to retrieve his Black Trigger by impaling him with the spikes.

Users

 * Moira

Abilities
It is capable of creating black circles in the sky. These circles can be used as portals connected to where Mira is, or transformed into spikes, to attack enemies. She can also teleport targets away with the portals.

Its weakness seems to be that anyone can use the portals to travel, including enemies, and that the portals will also transport attacks, such as trion bullets. If not carefully monitored, the user runs a risk of an enemy taking advantage of the portals' interconnected characteristic. It is also revealed that this trigger consumes a lot of trion.

Trivia

 * Speiraskia is a combination of the Greek words speira (σπείρα speíra, spiral) and skia (σκια skia, shadow) which means "spiralling shadow".