That is a truly beautiful piece of work and quite likely the best looking"fusion" piece I have ever seen. The use of the Hokusai wave theme really puts it above many knives I've seen that simply mix typical "Japanese" features. One thing if I may, is that while "Arashi no Umi" would translate as "A stormy Sea", it sounds, with all due respect, like third grader Japanese. "Umi Arashi" meaning "Sea Storm" would also work but suffer a similar effect. The word for a Storm at Sea is "Shike" pronounced "she-kay". Considering the level of the knife I tend to thing this level of name would be more appropriate.
My two cents for what it's worth.