Kizuna Aikawa

Aikawa wears the girls' school uniform at Midorinoka (he tried wearing the boys' uniform at one point, to the awe of his classmates, but found it didn't suit him as well), and cross-dresses outside of school, too. He's very girly and comfortable with this, but is quick to remind everyone of his true gender, and occasionally worries his cross-dressing is holding back his masculinity (he wonders if that's why he's stopped growing taller, for instance).