Gender-Bender manga is a genre of manga that has the main character who changes their gender. Some of these stories may explore the life of the protagonist in their designated gender, while others may not.
A lot of these stories are about exploring topics that would be controversial for a heterosexual male/female lead to explore. Including issues around sexuality, sexual orientation, and gender identity. It entails the idea that gender is not always what it seems. Gender-Bender is an example of one manga that has been used as a tool for social questions. This popular manga tackles these issues. By presenting a world where genders are fluid and change with context.