Sora Tamaki is a Japanese actress and voice actor known for providing the voice of Mashiro in the anime film adaptation of Whoever Steals This Book. This role marks her debut in anime voice acting. Tamaki was born on August 2, 2006, and is from Japan. In the film Whoever Steals This Book, her character Mashiro is a mysterious girl who helps the protagonist, a high school student named Mifuyu, navigate an adventure through different stories after a curse is triggered in a library. The film is scheduled for release in Japanese theaters on December 26, 2025. Aside from this voice role, Tamaki has also worked as a live-action actress, including a part in the Super Sentai series and the lead role of Kokoro Okuno in the series Kokoro's Tee-hee-hee.