FC2-PPV-4746486 is a staff recording that has raised concerns within an advertising agency, obtained through special channels. This footage captures the filming of a mineral water commercial, with illicit cameras placed throughout the set, revealing numerous shots of the talent's underwear and exposed skin. Of particular note is a scene showing M-chan, a member of a currently popular idol group, in her bare panties—an extremely rare and priceless recording, worthy of being called a national treasure.