See, they sounded dramatically different with a totally different vocal delivery style on the part of the vocalist David Sylvian, and a major increase in Giorgio Moroder-style synthesizers. This really was a major change in direction for the band in the same direction as New Romanticism that was happening at the same time. I'm not 100% sure that I buy Japan's avowal of dissociation with the label. And like I said, I'm not sure that they get to decide that too. If they look like a New Romantic and sound [quack] like a New Romantic, and they do so at the same time as the New Romantic movement... you don't get to claim that you're not a New Romantic just because the label in the intervening years acquired a rather silly connotation.
The album Quiet Life was released either in December 1979 or January 1980 depending on the region. It wasn't initially successful, but after their subsequent releases (which continued the New Romantic sound) were more successful, there were some subsequent and belated single releases, including the song "Quiet Life" itself in August of '81. It had actually been released 18 months earlier only in Japan (which is oddly coincidental, since the band name was a place-holder that stuck, and the band themselves never professed any particular affinity for the country particularly (although they did record a track called "Life in Tokyo" which actually was produced by Giorgio Moroder.