The facts that I put here for the 6 Cloudbreakers have one thing in common — I stated the names of their inherent weapons. I originally didn't have this concept for the Korean version of Power Casters. I stated it first in the drafts that I have for the European version. They're sentient weapons  that have the ability to choose its master it would deem worthy of possessing it. It's not usual for the inherent weapons to be passed on from one member of the family to the other. But the power of the weapons that were passed on because of blood relations was said to be triple than the ones that came from a different source. No Power Caster can defy the choice that the weapons made about the master that would inherit and use them. Out of the 6 Cloudbreakers, only Jae-hwa and Ae-ri received their respective inherent weapons from people that didn't come from any member of their families.