Firms of search engine optimization have formed early in Japan same as in United States. Many companies in Japan understood the importance of search engine marketing, so they are processing web promotion through SEO and PPC advertisement. Korean companies that are going to advance into Japan have to understand the trend of Japanese search engine marketplace. And they need to bring up their brand awareness through SEO services. In the case of Japan, 'Yahoo! Japan' is occupying Japanese search engine marketplace with the share of search engines near 66 percent that is higher than 'Google Japan'. Therefore, according to Japan's characteristic search engines, you have to optimize your homepage.