German livecam search is a strong cluster because the user intent is specific. People are not only searching for any adult cam; they want language relevance, familiar context and a faster way to find suitable rooms.
Use a dedicated German hub
Instead of spreading German keywords across every page, XFunClip should point German-intent links toward one stable hub. That gives the site a better chance to rank and avoids cannibalization.
Keep unrelated subdomain topics separate
Creator signup content, JAV content and separate live projects must not dilute the main-domain topic. Each project should build its own authority.