It’s not even his whole life and even then what’s really stopping someone from doing that?? If someone doesn’t identify as trans then they don’t. Just because he presents a certain way doesn’t mean anything about his gender identity. Things are not black and white and sexuality and gender presentation is a very complicated and fluid thing
I get what you’re saying because it does negatively impact trans people to portray them as predators. However, I do think you have to consider cultural context, cross dressing and living as another gender is a common trope in East Asian media and generally the character does not identify as trans and it’s portrayed as a situational rather than identity. One of the most famous Chinese folktales that’s well known across East Asia is Butterfly Lovers and the female lead in that story dresses and lives as a man in order to attend school. A more recent Korean example is Coffee Prince, a drama where the male lead mistakes the female lead for a cisman and she plays into this misconception for employment reasons. I think rather than avoiding writing a trans character, it’s more likely that these authors are cis themselves and the thought of a trans character didn’t cross their minds, they’re not knowledgeable of the lived experiences of trans people, and they’re just building on existing tropes in the media.
this shit always doesnt sit right with me. like even if theyre not a trans girl, it would seem like they are to anyone yet the MC keeps calling them a "he" just cuz they have a dick.
also why would they live as a girl full time, which obvi includes having to raise their voice full time, unless they were trans? it just feels like these authors just want to completely avoid having an actual trans character. They also always portray these characters as some sort of predator or "trap"