This is the story of Kei Yoshikawa, who finds out when he's a teenager that in actuality he is a hemaphrodite with the chromosomal makeup of a girl. Thinking he has no choice but to convert genders, he decides to live as a girl.
I love these gender-bending types of stories and also like the hints of yaoi in them and I thought the twist or reason for the cross-gender change was refreshingly unique. However, the best thrills of this type of story come with the "fish out of water" moments when the cross-dressing character bumps up against some situation where the character's normal reaction is not the reaction one would expect from the portrayed character (when a cross dressing boy doesn't act like the girl he appears to be). And those little moments are hard to find in this story mainly because of a plot device the author used that I think was a mistake and that flawed the storyline. The author, Mikiyo Tsuda, created a character, Makoto, who stays constantly by our hero's side and advises him/her on proper etiquette, thus stopping some of the more deliciously fun potential of the story.
Also there is an art quirk that drove me nuts as well: the author changes the above mentioned Mokoto character's look and appearance drastically midway through the story with no explanation or reason why given.
Still enough fun for me to look into reading book 2 of the story, but flawed. It could've been so much more!