the situation between kaya and miyo is almost sad, cause they were both abused, but since kaya benefited from it she too became an abuser. Kinda reminds me of Akito from Fruits Basket being abused and in turn abusing the other cursed people, like what Akito's mother did was fucked up but a shitty childhood does not excuse what Akito did to the rest of the cursed people (blinding Hatori, hurting Rin, isolating Yuki, verbally and physically abusing them, whatever the fuck happened with Kureno cause consent there feels iffy, etc).