My sister is dead.
Died in a "favor" given by the city to the bottom.
She took on the identity of her younger sister and broke into the above-ground city suspended in the clouds, breaking into the top military arena in the entire federation.
There was light there, a sky she had never seen before, and an aristocratic genius overlooking all living beings.
There is also the truth about the death of my sister.
No one knew that her hands, which had repaired countless discarded mechas, had already sharpened their blades enough to tear everything apart.
Intention: When encountering difficulties, break out of the siege