Talk:Karren von Rosewald/@comment-29558690-20170405051948/@comment-27844525-20170418190626

It states it here rather clearly:

" In later years when Kanae was sparring with  Matsumae, Kanae bent over in pain and tried to ease Matsumae's concern by saying it was something that always happened. It turns out that all the servants knew he was biologically female, implying Kanae's earlier statement was referencing menstruation, with the exception of Shuu Tsukiyama. "

The reason she acted and dressed as a man was also stated:

" Kanae was very devoted to her family and was completely willing to sacrifice her identity as a woman to help fulfill her father's dying wish to continue the Rosewald family line in place of her brothers. "