What's the quality like?
How is their denim?
Definitely British and not Japanese. The 'super dry' thing was just taken from a common Japanese beer brand. The 'Japanese' on the labels and elsewhere is essentially meaningless nonsense. It's a brand that is just trying to build on the popular perception that Japan is cool and imitate the Japanese revival of US workwear (which is pretty ironic really... as well as being more than ten years behind actual Japanese trends). And it's pretty average mass-market stuff and not worth bothering with.