In the mecha world, in order to protect the territory and for the sake of human peace, the mecha masters have captured countless strange beasts. The place where they are imprisoned is called the Abyss Prison. But on the surface it is for human development, but in fact it blocks the evolution of species. Mechas dominate, and the ecosystem gradually turns into a wasteland. The machines are black and white, but all life is in color.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.