hi and thanks for reading my book! before i saw hange as gender fluid as well but after talking with other people in the community, most people refer to them as non binary since isayama never gave them a gender and no one in the anime or manha refers to them with specific pronouns. the lost they do is call hanga "miss" and "san" as apostates to "mr" or "kun" take it as you will but for my book hange is non binary:)