lore-friendly transitioning methods

[Burmecia]

eorzea's cultures are actually pretty advanced, they just use magic + tech to work out problems we in earth use tech.
even garlean tech is called magitek, and it's expression imitates magic. allag was something even beyond modern eorzea. for situations we on earth try to build robots, they had advanced chrimerical creature production and cloning programs. though they had automatons too, those manekins running amock in deep dungeons.

alchemists might work out some solutions which can be used to hrt like effects, i guess. fantasia has been mentioned. glamours are thing.
i'm not saying there can't be medical researchers on eorzea who couldn't have found out as much about human body and how hormones work as we have on 2020 earth.

though... whole universe where eorzea is located might not work the same way as ours. we are made out of atoms on earth, they are made out of aether in eorzea.
presundered world for sure had magic which could make anguish over someone's physical form plainly irrelevant