The War Song of the Virtual City

This is an overhead universe where subspace technology and mechanical life technology are extremely developed. Subspace technology is everywhere, but only a small group of people called void walkers can travel safely through it. The whispers and storms in the depths of the void can tear everything apart at any time, and even void walkers have to abide by the laws of the void. Only a small black shadow carried a secret that could change the fate of this world. In order to take revenge many years ago, he launched a rebellion against the law of the void.