Once upon a time, there was a cat named Oli who lived in a small apartment with his owner, a young woman named Sarah. Oli was a very curious cat, and he loved to explore the apartment. One day, Sarah was at work, and Oli was home alone. He was exploring the living room when he saw a small cage in the corner. He had never seen the cage before, and he was curious about what was inside. He carefully approached the cage and peered inside.
To his surprise, he saw a small guinea pig! The guinea pig was white with brown spots, and it had big, brown eyes. Oli had never seen a guinea pig before, but he was immediately smitten. He reached out and touched the guinea pig's nose. The guinea pig squeaked and wriggled its nose. Oli laughed and petted the guinea pig's soft fur.
Oli and the guinea pig quickly became friends. They would spend hours playing together in the apartment. Oli would chase the guinea pig around the living room, and the guinea pig would squeal with delight. They would also cuddle together on the couch, and Oli would purr contentedly as the guinea pig nuzzled his fur.
One day, Sarah came home from work and was surprised to see Oli and the guinea pig playing together. She had never seen Oli so happy. She asked Oli where he had found the guinea pig, and Oli told her that he had found it in the cage in the corner. Sarah was delighted that Oli had found a friend, and she decided to keep the guinea pig. She named the guinea pig Ru.
Oli and Ru lived happily ever after together in Sarah's apartment. They were best friends, and they loved each other very much.