Ooeda Hyouka (the aunt), I haven't seen the raw so I don't know the characters used for her name, but isn't it possible that it's a pun with 氷菓 (also read hyouka, meaning ice cream), since she likes soft serve?
So does this mean that he is now going to not be chill around all of the girls? Is his libido going to be back? I guess it would make it more interesting.
I sometimes like it when the author does AU in the their stories. It's BS but it's canon BS and considering the story it's based of, I'm all in for this AU