About the use of the site


Original versions of Privacy Policy is written in Japanese under assumption that it applies to individuals residing in Japan. This translation is provided only for reference, and in case of any discrepancy between Japanese version and this English version, the Japanese version shall prevail.

This website is operated by Watty Corporation (hereinafter referred to as “the company”). By using this website, you are deemed to have agreed to the Terms of Use. The terms of use may be changed without prior notice, please check our latest term of use.


All content published on this website is subject to copyright protection. This website does not grant any rights based on copyrights, patent rights, trademark rights or other intellectual property rights. However, in the case where individual terms and conditions for use are separately indicated or linked to the contents indicating such terms, the terms and conditions shall prevail.

Sentences and contents

We do not guarantee the documents on this website and their contents. Even if there is an error in the content of the document on this website, we can not assume any responsibility. Also, please be aware in advance that the information contained in the documents on this website may be changed without notice.

Publication date and its contents

The information published on this website is the information at the time of publication. Please note in advance that it may change after posting.


While we take all possible precautions when posting information on this website, we do not guarantee the accuracy, usefulness, safety, certainty, etc. of such information. Please note that we do not guarantee the content of this website in any case. The use of this website is at your own risk, and the responsibility lies on the person who has access to this website. In addition, we do not take any responsibility, such as guarantee that the content of this website is displayed properly in each environment of each person who has access of this website. The Company shall not be liable for any damages resulting from the change of information and the interruption or discontinuation of the operation of this website for any reason.

Other company names and product names are the trade names, trademarks or registered trademarks of their companies. In the case that our website shows their trademark, or when it links to the content on this website, users shall follow the term of use of original companies’ trademarks and/or product names.