@Porg theres a lot for me to say, but if I had to say it as simply as possible:
Genderbender + Isekai + Ecchi = read a genderswap H-doujin at this point
Genderbender + Isekai + Royalty + romance = commoner adapts to noble society. The MC also has to adapt to becoming a woman in mind, body, and soul. Ends with MC marrying a guy bc they accept their gender swap... but that detracts from the current direction of this manga's plot.
Genderbender + isekai + romance + yuri = one natural-born lesbian paired up with a hetero male to female gender bender.
Very creative (sarcasm). IMO that's a copout on the Author's part. Why not make the MC a female to begin with, and have two genuine lesbians?
Genderbender + Isekai + Magic = OP Mary Sue. But wait, what was the point of the gender swap, when the MC couldve been a girl to begin with.