Just finished playing this game, it was lovely!
As an ace, I could relate to quite a few of Katekyo's thoughts. Finding baked goods more attractive than another person? Of course! There's nothing quite a delicious pastry! I found his love for baking absolutely adorable, and I'd love to learn more about Katekyo himself.
As for the girl... I already knew I was meant to hate her, but man, that hate just kept on growing everytime she spoke. While I've never had any experiences of the sort myself (never went on dates either and I'm 23 :P) I've heard of many ace experiences similar to this. It may be something I'm aware of, but this is a good way to show it to people who perhaps haven't thought of the consequences of their words, of how some people may feel.
ALSO almost forgot to say, I love Katekyo's eye color. It's lovely!
Anyway, loved the story, and wish the best for Katekyo, please let him be happy!!!
(repeating my rating rambles because you deserve more comments)