I have a God-killing prison

Story of: I have a God-killing prisonSeventeen years ago, a blue illusory river descended on the earth. The illusion was visible but untouchable.At the same time, inexplicable horrors are coming around the world.They will return.In the bustling city, monsters are rampant and demons are rampant.Do you really understand this world?Did you know that in a distant place, there are indifferent gods staring at the world?Do you know that in the no-man's zone, the "unknown" is coming quietly.In fact, this world is far more complicated than you think.Hush, this is the God-killing prison!