I really hope we get more details on Chidori's past crush. We know that she felt she should never fall in love again and cut her hair in September, but by the time February rolled around she had started falling for Nanoha, but was not admitting it to herself, or at least was fighting it. But then she got Valentine's chocolates that were "not just as a friend" from Igarashi-sempai, who she proceeded to reject. So I'm kind of wondering why the relationship with Igarashi caused so much pain if the girl had feelings for her as well? Or was it that she turned her down and then changed her mind after Chidori had moved on? Or was there some kind of triangle going on with her and two sempais and Chidori really liked a different one, who didn't return her feelings, but Igarashi liked her?
It would be nice to get the full story and not just bits and pieces...