I think most of us would be very happy with half his success. But if you look at what he has done and analyze his imagery, do you really have to travel to Japan to find similiar subject matter? I do not encourage cloning, but developing one's own vision.
That can be done be exploring your own back yard, county, state, parks, back alleys, etc, etc. Why waste time and emotions on the envey of anothers work? If you admire it, buy it. Artists cannot live on drools and accolades from admirers. Let it inspire you. But don't let it keep you from working with what is infront of you.