Ranma-chan has a female admirer
I was wondering if there were any stories where Ranma-chan catches a girl's interest at school, in that she wants to be close to her and/or spend time with her. Not in the romantic sense (though that's alright), but definitely to the effect that she either wants to be like her to some extent, treats her as if she were an onee-sama, or both. Something along those lines. Since an original character is probably the most likely venue for it, those will be fine.