[begin pedantry]If I was wrong using that word, pls correct me as what would have been the right way to put it. I certainly meant no disrespect.
"Asian" is acceptable, "East Asian" might be better depending on context. "Japanese" is applicable here, since we know the designer is Japanese, and their design culture is distinct from the design cultures of other East Asian countries. "Oriental" has meanings associated with it which might not be what you mean, but people who don't know you well enough won't know you don't mean it.
[end pedantry]
