Kaya-chan wa Kowakunai - Vol. 3 Ch. 15 - Grandma isn't scary?

[Forkuth]

So the mother probably made a deal to have babies strong with the psych stuff leading them so far both to have some level of bring possessed.
Kaya seems to be the inheritor of the gift this generation (maybe not since her great aunt had it but seemingly not her mom?) Hard to say

 

[Gol.D.Alloy]

𓁹‿𓁹

 

[gmkgoat]

Huh. So the first born daughter of the clan is the one who gets all the power, but Kaya's mother is second born according to the photo in Mutsu's room. Her older sister, Kaya's aunt, is named Nana and something happened to her that was Mutsu's fault.