As there is a german style. The german style has it roots in history. After the fall of the wall, many brands, A Lange und Söhne at the head, reinvent german watchmaking taking inspiration from the past: three quarter plate, gold chatons, engravings... often in classical forms, like marines. Dornblüth, Stowa, Henschel, Lang und Heyne... how not to see there is a style here? All german watches aren't, of course, in this style, but that doesn't mean this style doesn't exist.
Historically, the date of birth of a proper japanese watch is the work of Taro Tanaka and the launch of Grand Seiko, preceeded by a few Seiko like the laurel. Before that, there is no japanese watch that doesn't look like another watch. Thé japanese style has been created by Grand Seiko, historically. The japanese style is the grammar of design. There are other japanese watches that aren't in this style, like there are german watches that aren't in german style, of course. Citizen uses the same style, and their watches are nothing less good, but the origin lies in Grand Seiko.
Nowadays, Grand Seiko wants to be a global brand, and in the process one can argue that they have lost their style, their specificity, the accuracy of their design. It's my opinion. Is it for the better or worse?
imho