The Japanese version of the disclaimer is the official version. The English version is provided for reference purposes only.

The disclaimer of “RK Kaihatsu” (https://www.rk-k.com/) (after this referred to as the “This site”) is as follows.

Accuracy of the Information

We strive to provide accurate information on this site. However, the site may contain errors and outdated or invalid information. We can’t guarantee accuracy, validity, and safety.


We are not responsible for any damage or loss caused by the contents or software on this site.

If you are transferred from this site to another through a link, banner, or other means, we are not responsible for the information, services, or any other content provided on the linked site.

We shall not be liable for any damages incurred by users due to the suspension of service on this site due to force majeure, such as maintenance of this site, fire, power outages, other natural disasters, viruses, or interference by a third party.

If you use this, you do so at your own risk.

Copyrights and Portrait Rights for Images Posted on This Site

Copyrights and portrait rights for the images on this site belong to their respective owners. If you have any problems, please get in touch with us using the contact form.

Prohibition of Unauthorized Reproduction

Unauthorized reproduction of any text, images, videos, or other copyrighted information on this site is prohibited. Legal action will be taken if the information exceeds the scope of the quotation. Please contact us through the contact form if you wish to reproduce any content.

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We are not involved in the content of advertisements or links on this site. Please refer to our “Privacy Policy” regarding ads.


This disclaimer is subject to change without prior notice.

November 17, 2020