Emi also doesn't have legs or such an innocent look to her most of the time. It wavers between intensity and lemons.
For clarity's sake, it's not so much she doesn't have legs as much as she was amputated at the kneecaps. She has prosthetic legs for everyday use, and then a special pair of sports legs for track running. Though you are correct about her mischievous streak.
And yes, I thought this was Emi too before I saw the tags.