Maintain the consistency of the characters (remains unchanged in appearance and gender), the protagonist clenches both hands into fists, and the body begins to tremble slightly, as if gathering some mysterious power. As the protagonist shouts loudly, the body begins to grow rapidly, the muscles gradually bulge, the figure continuously rises, the clothes are stretched by the muscles, and fragments fly in the air. Instantly, the figure becomes muscular. The protagonist slowly opens their eyes, a confident and powerful smile appears on the face, showing a strong arm and distinct muscle lines. Wearing a thong, a bikini top, and underwear. Fixed shot, close-up shots capture the changes in the protagonist's facial expression and the process of the muscles gradually bulging, the main subject is a woman and must wear a thong and bikini top.