If you are looking for a serious, mature and sophisticated manga dealing with cross gender identity issues, check out Claudine (highly recommended) by Year 24 mangaka Ikeda Riyoko.
That said, this one is excellent if you just want an adorable, happy, unapologetic Anne-of-green-gables type character who, although seemingly simple, is maybe just bang-on about life. "If you hate yourself you'll make your whole image seem muddy, but if you like yourself, you'll be able to shine...It's wonderful to like yourself, isn't it?" Maybe it is a lot simpler than we psycho-analyzers think it is...
The Plot and Characters
The story itself is simplistic, as are all the characters. Big serious issues are left un-addressed and strangely accepted. Regardless, I thought the plotting was well done; it never promised to take itself too seriously, and it kept true to that for the majority of its telling with feel-good simplicity.
Naruse, and his entering into a 'brave new world' as he tried to understand his feelings toward her was a like-able, idealized partner for Sara. The mother was one of the most unlike-able characters I have ever read. She was over-simplified and fairly one-dimensional, but the essence of selfishness behind her character came through. If she was for comedic purposes, it didn't work; it only made me sad. But since the primary purpose of this story seemed to be feel-good, flowers and sunshine with a tiny side order of extremely simplified and idealized--gender identity issues, I can forgive the foibles of the mother's character.
The Art
Bright, clean, round-lined, vibrant and uncluttered art: the backgrounds are kept minimal and the characters dominate the panels. Everything moves as it should and the delivery, for the most part, was easy and natural to follow from frame to frame.
Problems
The story occasionally began to promise something more realistic and meaningful, and I felt slightly insulted with the results handed to me. Second, Sara's dialogue was in cutsey third person narration when speaking about herself; surprisingly, I wasn't annoyed by her indomitable cheerfulness; only her dumbed down voice. I suppose that was the 'type' of girl she felt right with. Finally, two of the friends, one being a main character, looked too similar, thus creating a clunky confusion factor in several important scenes.