After the nuclear warfare, massacres started to spread throughout the entire world. The order between humans completely collapses, and the strong eats while the weak gets eaten becomes the #1 rule. When you lose the chains of desire, it means that you no longer have a road to go forward. You can only turn left, or face right. Hell is to the left, but Hell is also to the right. The plot of this novel is quite similar to the Overlord light novel.