If you have already downloaded or "installed" something related to this keyword from a non-FC2 site:
While there are browser extensions that claim to download FC2 videos, many are updated frequently with malicious code. It is always safer to use the official platform's offline viewing features if available. Protecting Your Device fc2 ppv 3292343 install
Official FC2 content uses standard HTML5 players. If your browser is up to date (Chrome, Firefox, or Safari), you do not need to install any additional software. If you have already downloaded or "installed" something