Interesting. The dynamics of the Ebisumori family sure are strange. If the eldest daughter is the one who gains the psychic power, how come Mutsu is so much stronger than Nana? And why is Namu able to use powers at all? Does Mirai know what's happening to her? So many questions.
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.