Damn… Haruna couldn’t catch a break
Given this panels , their conversation after, the fact that memory manipulation spell exists and how the demon kin stepped in just as that moment, it’s probably what happened to her.
Anyway hero need to get his ass beaten up somewhere down the lines, given what happened I understand the hatred but it’s not like he didn’t saw what Haruna did, at least he should try to have a proper conversation. From the reaction of everyone it’s not hard to imagine why Shuri got manipulated so easily, she probably try to help, get beaten up by the humans because th prejudices and then the demonkin swoop in to brainwashed her. I hope Ruka is not brainwashed too but it’s probably not the case.
Also my tinfoil hat theory is that the one who the Hero saw back then is Haruna predecessor given the silhouette kinda matching what we saw on the first chapter.