It was an ordinary day at the pool for Anna, Betta, and Chiara until they stumbled upon a peculiar machine. It was sleek and futuristic, labeled 'Trait Swap Machine'.

Curiosity piqued, they decided to test it out. Anna went first, choosing to swap her traits with Betta. A bright light enveloped them, and in a blink, the swap had happened.

Anna, now in Betta's body, was shocked. She looked down at herself, taking in the changes. Her once slender frame had transformed into Betta's fuller figure.

Betta, on the other hand, was in awe. She was now in Anna's body, feeling the unfamiliar sensation of being slim and athletic. She twirled around, admiring her new look.

Chiara watched all this, nervously biting her lip. After seeing the drastic change in her friends, she hesitated. But curiosity won, and she decided to swap with Anna.

Once again, the machine whirred, and a bright light enveloped them. When the light faded, Chiara found herself in Anna's body. She felt different, but not in a bad way.

Anna, now in Chiara's body, was surprised. She felt lighter, more agile. She marveled at her new figure, appreciating the change.