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In principle, links to this website are free. Before creating a link to this website, please use the inquiry form to contact us regarding details of the content, the URL of the link source, and the purpose of the link. We reserve the right to refuse links depending on the link method and the content of the link source. Cases in which links will be refused are as follows.
(1) Links from commercial and solicitation websites that are not congruent with the purpose of this website
(2) Links creating the mistaken appearance that the content of this website is part of the homepage of the link source
(links that load contents inside of a frame, etc.)