), a fighting competition held every ten years. During the course of the story, more background about the setting of Battle Angel Alita that was not disclosed in the prior series is revealed, such as how the Earth emerged from a cataclysmic impact winter that wiped out most of the population.
This tournament occurs every decade. Meanwhile, the narrative delves deeper into the setting of Battle Angel Alita, including its origins from an impact winter that nearly wiped out human civilization.