>>48528057actually it lends more credence to the orcschizo rrat, Mumei has basically nothing in common with Kiara, their personalities don't really match together at all and none of their interests/friends align; so theoretically there should be nothing connecting them and it makes no sense that Mumei would be so immediately talkative and enamored by Kiara - unless she was already drawn to her for some reason beforehand.
Hate is just the flipside of love and tsunderes are a thing. Orcschizo's behavior toward Kiara went beyond just hate like a normal anti, it was obsessive; they clearly couldn't stop thinking about Kiara and enjoyed talking about her. If their blog thing was to be believed they even claimed to have warmed up to Kiara later anyway after their schizoing was so throuroughly btfo'd and Kiara 'improved' (from their POV).
If Mumei isn't orcschizo then you're basically saying that holoEN's most autistic shy weirdo member is somehow getting along with the group stacy out of nowhere, for no apparent reason, having had no prior relationship. That doesn't make sense.