So, Yanderedev mentioned that one of Ayano's great-great grandmothers would have worn a 'bloody kimono'. I had a cool thought about a Yandere from the far past in Feudal Japan... whose senpai fell at the hands of a nobleman's sent assassin. Imagine this woman gutting through and sawing every man who came in her way or stood between her and the person responsible for her eternal pain. Imagine this woman cornering some Japanese nobleman before killing him... and then herself. I imagine the Aishi women aren't particularly sane creatures.