Three pages in and I already have to comment. Mikan, you're so goddamn slow. Realize it sooner: people have four grandparents, not two. Asahi's too stupid to have noticed this already either, it's like they don't have a brain to split between each other over this matter.
edit: So it took a version of her from 50 years in the future bringing it up for that subject to be broached. I forgot about this since the last time I read it.