Reili
Weird. Never thought Shiro would be the cause of the system. Perhaps, not a Crack theory is that a shard of herself is the system or made the system. My other idea is that the egg crystal she found is another shard of herself. Add to the fact I also feel like she could perhaps use her nano tech as a way to channel the aura out. Granted if she does that then I feel like people would need to live in her cities as those there might be the only ones that can live safely at the point. Also. If her powers is what resets it, I feel like if she fails perhaps her floating cities and those inside might actually survive the reset