Only a small number of people from Hazy City were aware of the true nature of the alien phenomena, and among the worlds related to these phenomena that Ahn Seven knew of, some were also aware of their truth.
After her family in Hazy City made preliminary progress in their research on the phenomena, a split occurred. At the time, the entire family divided into two factions; one was the migration faction, who wanted to escape their world seeking higher environment worlds to develop within.
In low environment worlds, even the strongest beings could potentially be eliminated by technological weapons— it just depended on the feasibility. For exceptionally powerful entities, the possibility was never zero, but in high environment worlds, meeting an extremely powerful being meant normal technological weapons stood no chance of killing them.
There was no point in bringing up weapons like the star destroying cannon from science fiction works.
