This website (, hereinafter referred to as this website) is operated by Cave Co., Ltd. (hereinafter referred to as "our company"). Please read the following terms of use before using this website, and use this website only if you agree to these terms. In addition, when you use this website, you are automatically deemed to have agreed to the following conditions. Please note that we may change the terms of use without prior notice.

About the link

If you want to link to this website, please let us know in advance. Please include your name, contact information (address, phone number and email address), and the URL of the website you want to link to. Please note that the link may be refused depending on the content of the website and the method of linking. In addition, the contents of sites of third parties other than our company that link to this website or from this website are managed under their own responsibility and are not under the control of our company. Please use according to the terms of use listed on each site.

About copyrights and trademarks

The copyright and other rights related to the information posted on this website belong to the Company or the right holder who has authorized the use of the Company. These copyrights are protected by the copyright laws of each country, various treaties, and other laws, and use (reproduce) the contents posted on this website beyond the scope permitted by law such as private use. , Including falsification, distribution, etc.). In addition, our company and other company names, service names, product names, etc. displayed and described on this website are registered trademarks or trademarks of each company. Reproduction or diversion of these trademarks displayed or described on individual pages is prohibited.


We do not guarantee anything about this website, and we are not responsible for any troubles between the customer and a third party that occur when there is an error in the content or when using this website. I cannot bear the burden. In addition, we are not responsible for any accidents or other damages on the software or hardware caused by using this website. Please note that the information, file names, etc. posted on this website are subject to change without notice.

Recommended environment

Regarding the browser

On this website, we try to create pages that can be viewed even with older versions of browsers, but it is more comfortable to use the newer version as much as possible. The supported versions of the browser are as follows.

  • Latest version of iOS, OS: 10 or later The latest version of Edge, Safari, Firefox, Chrome

Regarding plugins

Please note that the following plug-ins are required to browse some pages of this website.

  • Adobe Reader plugin

Regarding JavaScript

This website uses Javascript so that you can use the site more conveniently. I try to view it even in an environment where Javascript cannot be used or when Javascript is disabled, but if Javascript is disabled and used, the page will display unexpectedly. It may be done. When using this website, please enable Javascript as much as possible.

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