Red Sky

The Sky in this world. Above the gray sea of clouds, there is not a blue, but a red sky.
It's not because of a pollution, but from the blood of one of the Aristoteles that appeared near the end of the Great War, Type-Pluto.
In order to not let Pluto enter the planet's atmosphere, the Six Sisters fought it and killed each other at the same time, and its blood covered the whole planet as a result. The gray cloud is said to be a shield that the Six Sisters placed.
Within this red sky, the two Aristoteles that are prevented from entering the planet is floating like fishes that swim in the sea.

Angel Voice: Notes.