Tundra District, covered in heavy snow.
A thin, small figure in a black cloak walked amidst the snow.
"滴."
"滴."
In the icy landscape, amidst the howling cold wind, a faint, rhythmic electronic sound echoed across the snowfield.
The black-cloaked figure walked silently, but after covering some distance, chose to connect.
"Did you see the message from [Cloud Mirror]?"
A man's deep, resigned voice sounded from the other end of the communicator.
"..."
The strong wind blew by, lifting the cloak to reveal a pale, somewhat sickly-looking girl's face.
Faced with questioning, the girl remained silent.
"The Source Tower has issued an emergency summons for the four envoys, a new and important task has been assigned from above, and only you are missing now."
