Konami : NOTICE OF THE 53RD ORDINARY GENERAL MEETING OF SHAREHOLDERS

Stock Code Number: 9766 As of June 4, 2025

Dear Shareholder,

You are notified that the 53rdOrdinary General Meeting of Shareholders of KONAMI GROUP CORPORATION (the "Company") will be held as described hereunder.

In convening this General Meeting of Shareholders, the Company has taken measures for electronic provision of information contained in the reference materials for the General Meeting of Shareholders, etc. (Matters Subject to Measures for Electronic Provision), and has posted the information on each of the following websites.

Company's website:

https://www.konami.com/ir/ja/stockbond/stockholderinfo/meeting.html (Japanese)

TSE website (Listed Company Search):

https://www2.jpx.co.jp/tseHpFront/JJK010010Action.do?Show=Show (Japanese)

(Enter "Konami Group" in "Issue name (company name)" or the Company's stock code number "9766" in "Code," and click "Search." Then, click "Basic information" and select "Documents for public inspection/PR information.")

If you are unable to attend the meeting, you may exercise your voting rights in writing or via the Internet, etc. You are, therefore, kindly requested to review the reference materials for the General Meeting of Shareholders, refer to "Matters regarding the exercise of voting rights" on page 3 contained herein, and exercise your voting rights by 5:00 p.m. on Wednesday, June 25, 2025.

The Company will accept questions from shareholders prior to the meeting, and will explain matters of high interest to shareholders at the meeting and post the contents on the Company's website at a later date. For detailed instructions on submitting questions prior to the meeting, refer to the included "Acceptance of Questions prior to the Meeting."

Sincerely yours, Kimihiko Higashio Representative Director, President

KONAMI GROUP CORPORATION

1-11-1 Ginza, Chuo-ku, Tokyo

1. Date and time: 10:00 a.m. on Thursday, June 26, 2025
2. Venue: "Arena," Main Office of Konami Sports Club,

   4-10-1, Higashi-Shinagawa, Shinagawa-ku, Tokyo

3. Agenda:

Reports 1. Business Report, Consolidated Financial Statements for the 53rdfiscal year (from April 1, 2024 to March 31, 2025); and on the Reports of the accounting auditor and of the Audit & Supervisory Committee regarding Consolidated Financial Statements for the 53rdfiscal year

2. Non-Consolidated Financial Statements for the 53rdfiscal year (from April 1, 2024 to March 31, 2025)

• In the event of any major changes to the running of the General Meeting of Shareholders, shareholders will be informed via the Company's website on the internet (https://www.konami.com/en/).

• For this General Meeting of Shareholders, paper-based documents stating Matters Subject to Measures for Electronic Provision will be delivered to all shareholders regardless of whether they have made a request for delivery or not. Please note that the Company does not include the "Notes to Consolidated Financial Statements" and the "Notes to Non-Consolidated Financial Statements" in the paper-based notice of the meeting delivered to shareholders since it posts such information on the website of the Company and the website of the Tokyo Stock Exchange (TSE) as provided for by the provisions of laws and regulations and Article 16 of the Articles of Incorporation. Accordingly, the Consolidated Financial Statements and the Non-Consolidated Financial Statements included in the paper-based notice of the meeting delivered to shareholders are part of the documents included in the scope audited by the Audit & Supervisory Committee and the Accounting Auditor when they created their respective audit reports.

• In case amendments or changes are made to Matters Subject to Measures for Electronic Provision prior to the date of the meeting, the Company shall notify its shareholders via the Company's website and the TSE website.

• Notification of Business Conducted at the 53rdOrdinary General Meeting of Shareholders that provides the results of resolutions will be posted on the Company's website instead of being distributed in writing.

• Institutional investors may use the electronic voting platform operated by ICJ, Inc., as a method of exercising their voting rights for the General Meeting of Shareholders of the Company.

  [Matters regarding the exercise of voting rights]

  There are three ways to exercise your voting rights.

  1. Voting via mail (in writing)

     Please complete the enclosed voting form by indicating "for" or "against" for the agenda items, and return the completed form to us. *1

     To arrive no later than 5:00 p.m. on Wednesday, June 25, 2025

  2. Voting via the internet

     Please follow the instructions stated on the next page and enter "for" or "against" for the agenda items.

     To be entered no later than 5:00 p.m. on Wednesday, June 25, 2025

  3. Attendance at the meeting in person

  Please remember to bring the voting form enclosed and hand it to the receptionist. *2

  Date and time of the 53rdOrdinary General Meeting of Shareholders: 10:00 a.m. on Thursday, June 26, 2025

  *1 When there is no indication of "for" or "against" for agenda items on the voting form, the Company shall treat it as an indication of "for."

  *2 Please be informed that any person other than a shareholder entitled to exercise the voting right such as any proxy or person accompanying a shareholder, who is not a shareholder of the Company, is not permitted to attend the meeting.

  Handling of duplicate exercise of voting rights

• If you exercise your voting rights both via mail (in writing) and the internet, etc., we will consider only the vote via the internet, etc. to be valid.

• Also, if you vote a number of times over the internet, etc., we will consider the final vote to be the valid one.

You can login to the website for exercise of voting rights without having to enter your voting code and password.

1. Please scan the QR code located on the bottom right of the voting form.

   * "QR code" is a registered trademark of DENSO WAVE INCORPORATED.

2. Please follow on-screen instructions to enter "for" or "against."

Voting website URL: https://www.web54.net

1. Please access the website for exercise of voting rights.

2. Please enter your voting code provided on the voting form.

   Note that the exercise of voting rights by "Smart voting" is possible only one time. If you wish to change the contents of your vote after exercising your voting rights, please access the PC version of the website, enter your "voting code" and your "password" described in the voting form, log in, and exercise your voting rights again.

   * If you rescan the QR code, you can access the Website for Exercising Voting Rights for a personal computer.

1. Please enter your password provided on the voting form.

2. Please follow on-screen instructions to enter "for" or "against."

You may not be able to use the website for exercise of voting rights depending on the internet environment, etc.

Any connection fees, such as telephone charges and telecommunications charges incurred by shareholders in exercising votes online, are to be borne by such shareholders.

Because the terms of office of all six Directors (excluding Directors who are Audit & Supervisory Committee Members) expire at the conclusion of this General Meeting of Shareholders, this proposal requests the election of six Directors (excluding Directors who are Audit & Supervisory Committee Members).

The Audit & Supervisory Committee has judged that all of the proposed candidates for Director (excluding Directors who are Audit & Supervisory Committee Members) are qualified.

Candidates for Directors (excluding Directors who are Audit & Supervisory Committee Members) are as follows: