You can create a link to the top page of our site( without obtaining prior permission. However, linking to pages other than the top page requires the permission of our organization.

If you would like to create a link to pages other than the top page, please send us a request via e-mail(, and we will get back to you with our decision.

Furthermore, we will accept no responsibility for the content of sites linked from our site, or of sites with a link to ours.

We decline the commercial use of our site where our permission has not been granted, and the creation of links to our site in the following cases:

  • Links from a site including content which slanders the services of our site or our site itself, or content which damages our trust.
  • Links from a site including content which does not uphold public order or standards of decency.
  • Links from a site carrying illegal content, or involving illegal activity or the possibility of it.
  • Links which, by any means, obscures the fact that the content belongs to our site.