Illusory space, infinite reincarnation, the flame of battle will never go out, even if there is only a glimmer of hope, never give up... This is the space of death, this is the cruel battlefield, this is the purgatory where monsters are rampant, killing is the most instinctive desire, here is the most perfect interpretation of the law of the jungle and natural selection. Stay alive! Live! This is the most basic luxury! An ordinary person living at the bottom of the city, a decadent young man who felt guilty for his dead mother, accidentally came to the "reincarnation" space. Let's see how he becomes stronger until he breaks this cycle. !