なお、訴訟手続の公正な進行および相手方の防御の機会を尊重する観点から、現段階における被告の特定および事案の詳細については、開示を差し控えさせていただきます。

４．今後について
本件の詳細につきましては、訴訟手続の進展に応じ、適切な時機をもって改めてご報告申し上げます。

当社は、HISが22年の歳月をかけて築き上げてまいりましたブランドおよびこれに寄せられる信頼を守り抜き、在籍生徒・ご家族・卒業生、ならびに国際教育に携わるすべての関係者に対する責任を果たすべく、適切な対応を進めてまいります。引き続きご理解とご支援を賜りますよう、お願い申し上げます。

【本件に関する報道関係者からのお問い合わせ先】
株式会社HSGE（Hayama International School 運営会社）
広報担当：瀬川　翔
所在地：〒240-0105　神奈川県横須賀市秋谷4427-1
TEL：046-855-5112
Email：contact@hayama-international.co.jp
Web：https://www.hayama-international.co.jp/


Notice of Filing of Lawsuit Regarding Use of a Similar School Name

HSGE Co., Ltd. (Headquarters: 5-17-1 Shirokanedai, Minato-ku, Tokyo; Representative Director: Shinsaku Tanaka; hereinafter "the Company"), operator of Hayama International School (hereinafter "HIS"), hereby announces that on April 10, 2026, the Company filed a lawsuit seeking an injunction and other relief at the Yokosuka Branch of the Yokohama District Court, based on the Unfair Competition Prevention Act.

1. History and Name of HIS
Since its founding in 2004, HIS has operated for 22 years from its campuses in Akiya, Yokosuka City, Kanagawa, and Shirokanedai, Minato-ku, Tokyo, consistently working to provide an international educational environment. The school welcomes students from diverse backgrounds, including children of families stationed at U.S. Fleet Activities Yokosuka. To date, HIS has produced approximately 800 graduates, and more than 16,000 individuals have participated in its educational programs, including summer school.

Through these years of dedicated educational practice, the name "HIS" has become widely recognized as an identifier of our school, not only within the local community but also among the international community in Japan and those involved in international education.

2. Background to the Filing
Recently, a name similar to our school's name "HIS" has come to be used by a third party as the name of a school. In this context, the Company has received a large number of inquiries from stakeholders both within Japan and abroad, and has confirmed numerous instances of inquiries — including from individuals in the United States — that appear to reflect confusion between HIS and the school operated by the said third party.

The Company has determined that allowing this situation to continue poses a significant risk of undermining the trust placed in HIS by our current students and their families, our graduates, and all those who have supported HIS over the years. Accordingly, we have decided to seek an appropriate resolution through legal proceedings.

3. Summary of Claims
In this lawsuit, the Company is seeking an injunction against the use of the similar name, based on Article 2, Paragraph 1, Item 1 of the Unfair Competition Prevention Act. In the interest of ensuring the fair progress of legal proceedings and respecting the defendant's opportunity to present a defense, we will refrain from disclosing the identity of the defendant and the details of the matter at this stage.

4. Going Forward
We will provide further updates on the details of this matter at an appropriate time as the legal proceedings progress.

The Company is committed to protecting the brand that HIS has built over 22 years and the trust it has earned, and to fulfilling our responsibilities to our current students, graduates, families, and all stakeholders in international education. We look forward to your continued understanding and support.

【Media Inquiries】
HSGE Co., Ltd. (Operator of Hayama International School)
Public Relations: Sho Segawa
Address: 4427-1 Akiya, Yokosuka City, Kanagawa 240-0105, Japan
TEL: +81-46-855-5112
Email: contact@hayama-international.co.jp
Web: https://www.hayama-international.co.jp/


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