Here are several reputable papers and articles covering these themes: Academic & Scholarly Papers
: Published by the Illinois Open Publishing Network, this article analyzes works like Stop!! Hibari-Kun! and No Bra to understand the appeal of gender-ambiguous characters to both male and trans-feminine readers. she male anime
: This paper, available on ResearchGate, examines gender transitioning in anime and argues that some subgenres may reinforce binary gender concepts rather than being purely progressive. Here are several reputable papers and articles covering