>>57975268 (OP)No, she's a boyish girl, a Japanese term that refers to unfeminine appearance or fashion. Although in Japanese culture, she does exhibit tomboyish behaviors, such as being violent, liking sports, and having certain speech patterns. In the West, we're accustomed to women with strong personalities, so our concept of a tomboy is more extreme.
A more classic example of a tomboy would be Iris, Bea, or Nemona, but they also have their feminine side.