It's not from anime, it's an original character. The prototype of Mugen Element Kung Fu Girl is Yang Meizhu of China. She is a female fitness instructor with rich martial arts experience and beautiful figure. She has won the national bodybuilding championship and the world bodybuilding runner-up for many times. Yang Meizhu participated in the role design work in the early stage of game development, and personally served as the image spokesperson of Kung Fu women. Mugen is a free 2D fighting game engine developed by American Elecbyte team using C language and Allegro library. There are versions running on DOS, Windows and Linux operating systems respectively.