If you had a novel that was being cached in the browser, its file would be stored in the browser's cached folder. The exact location may vary depending on the browser version and operating system, but it should usually be in the browser's installation folder or by visiting the browser's settings or developer tools to view the buffer folder. There would usually be one or more sub-files called "Caches" or "Cookies" in the cookie folder, which would contain the novel files that the browser had downloaded. If you wanted to delete the novel in the buffer, you could directly access the browser's buffer folder and delete the corresponding file.