Some of ya'll need to chill and this is coming from the person who comes out swinging every time a certain word is used to refer to gender bender characters.
It's a cute manga. Not for me, but maybe fulfills a fantasy for someone who either wants a girlfriend who used to be a guy or wants to be that girlfriend? And for that girlfriend to already be super girly or taking to it naturally?
But people need to get over the idea that just because something isn't for them that it's necessarily flawed or invalid somehow. This might bother me more if I didn't have plenty of genderbend stuff that appeals to me personally? But I'm happy other peeps got stuff they like too. (example: I'm super into genderbend yuri but I don't cause trouble for people who like boy x gender bending pairings)
Let's all be happy we got a variety of stuff to enjoy in this genre. I couldn't possibly have imagined this back in the late 90's and early 00's.