From that point in the timeline, Kaida entered Gates out of curiosity, found enjoyment from killing monsters, and then went on to found her own Guilds.
Although an S-Rank Hunter wasn't required to found a Guild, she saw a certain amount of appeal in building up her own forces. In one interview, she even claimed her actions were for the goal of "improving the size of her pack."
Twenty-something odd years later, we make it back to the present.
WHOOOOSH—!!
Even from thousands of meters away, Victor Rapido could feel the immense volcanic power being emitted from the beautiful woman known as Kaida Drakenshield. Her aura, unlike any other, resembled something more monster-like than even monsters themselves.
To be honest, it was scary.