I chose
Electronics in general. If only average Japanese could ditch Microsoft Windows...
Masatoshi Shima - Wikipedia, the free encyclopedia
One of the founding fathers of today's home computer is a Japanese.
TRON Project - Wikipedia, the free encyclopedia
More advanced and powerful guideline of making a very robust operating system for business and telecommunication. Obviously made in Japan. This is technically better than Microsoft, BSD or Linux.
Too bad that most of the advanced first world countries feared this
meta-project because it will give Japanese business more advantages and various kinds of profit.
SuperH - Wikipedia, the free encyclopedia
One of the most stable and robust microchip for versatile uses made by Hitachi.