Talk:Katsushika Hokusai (Saber)/@comment-35167647-20190812132901/@comment-35539022-20190814015333

Oi was Hokusai's assistant as well as his daughter, and he was found to have over 30 different pen names in his lifetime, so maybe the name "Katsushika Hokusai" applies to both himself and his daughter, a pen name encompassing them both, and that's why the servant is counted as a female.