SODA Co., Ltd. Sunida forms partnership with PSA, the world’s largest grading service

SODA Co., Ltd. partners with PSA, the world’s largest grading service ​
SODA Co., Ltd. Press Release: September 12, 2025 Snidan enters into partnership with PSA, the world’s largest grading service The world’s first official PSA retail store opens on the 5th floor of the Sunidan Trading Card Akihabara store SODA Co., Ltd. (Headquarters: Shibuya-ku, Tokyo; Representative Director and CEO: Yuta Uchiyama; hereinafter “SODA”), operator of “SNKRDUNK” (hereinafter “Sneaker Dunk”), is pleased to announce that it has entered into a partnership with Collectors Universe Japan, LLC, operator of PSA (Professional Sports Authenticator), the world’s largest trading card authentication and grading service, with the aim of expanding authentication and grading services in Japan. As the first step in this partnership, the world’s first official PSA store, “PSA Lounge Tokyo,” will open on the 5th floor of the Sneaker Dunk Akihabara Store.
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Background SODA’s mission is to “create the next marketplace that will captivate the world.” We strive to create an environment where people can not only trade products they’re passionate about, but also connect that passion to the next person. The total number of registered users of Snidan has exceeded 7.5 million (*1), and the company is expanding its business, focusing on apparel, sneakers, and trading cards. In particular, the total trading volume of trading cards on Snidan has grown significantly, with the total trading volume for trading cards increasing approximately 5.5 times compared to the previous year, and the total trading volume for PSA-graded Pokémon cards, which have the highest trading volume, increasing approximately 6.8 times compared to the previous year. (*2) Furthermore, the Snidan Trading Card Akihabara store, which opened in July 2023 and handles only trading cards, has seen its cumulative number of visitors exceed 1.1 million as of August 2025, and sales have increased approximately threefold compared to the previous year, demonstrating its popularity among many customers. (※3)
https://prcdn.freetls.fastly.net/release_image/43703/118/43703-118-e67797085d1c90b26775950beed4f67b-1999×1125.png Furthermore, Japan’s toy market size is expected to reach a record high of 1.992 trillion yen (※4) in 2024. The popularity of Pokémon cards and One Piece card games is driving the market. In addition to children, the desire to collect is growing among “kidults” (adults who have retained their childlike spirit) and inbound tourists, and the value of “preserving value while having fun” is spreading.
Authentication and grading are becoming more widespread to increase the value, guarantee, and liquidity of trading cards. At Snow Mania, PSA-graded cards account for more than 50% of trading value in the trading card category. (※5) However, there are still many counterfeit graded cards. At Sunidan, our management inspects all products during the transaction process and performs “authenticity appraisals” to guarantee authenticity. We provide a safe and secure platform for customers, allowing many customers to enjoy trading PSA-graded cards. While there is a strong demand for grading personal cards, currently, PSA cards can only be requested online or at a PSA-accepting dealer, making it difficult to do so. Through this collaboration, we aim to expand authenticity appraisal and grading services in Japan by creating a system that allows seamless use of trading card grading within the service. As the first step in our partnership, we will open “PSA Lounge Tokyo,” the world’s first flagship store where PSA grading applications can be accepted, permanently on the 5th floor of the Snowdance Trading Card Akihabara store, and will be operated by PSA. *1: Cumulative number of registered users from the start of service (April 2019) to September 2025 *2: Total monthly merchandise transaction value for August 2024 and August 2025 *3: As of August 2025 *4: Japan Toy Association “Domestic toy market size in 2024” noopener”>https://www.toys.or.jp/pdf/2025/2024_data_zenpan.pd *5: Percentage of total distribution transaction value of PSA-graded cards in the trading card category from July 2023 onwards Partnership concluded Overview (Implementation planned from September 2025) 1. Opening of a PSA flagship store (official directly managed store) within a Sundan store 2. Designing a safer and more secure experience for Snidan app transactions 3. Initiatives and information sharing aimed at eradicating counterfeit trading cards 4. Holding events to promote trading card culture Overview of PSA’s Official Direct Store “PSA Lounge Tokyo” The world’s first permanent flagship store, which will handle PSA grading services, will be located on the 5th floor of the Snowdance Trading Card Akihabara store. Store name PSA Lounge Tokyo Handling services P.S.A. Japan Grading Service Reception Opening Date ■Pre-opening: Saturday, September 13, 2025 *Only those who win the lottery can visit the store. To enter the lottery for a visit from September 13th to 15th, please use the form below.
https://forms.gle/73HuJdEJUokY9sJy9 For further details and in-store lottery entries, please check the official X (formerly Twitter) information. https://x.com/PSALoungeTokyo ■Grand opening: Friday, September 19, 2025 Address 5F, Sunidan Trading Card Akihabara Store, Sotokanda 1-chome Building, 1-14-1 Sotokanda, Chiyoda-ku, Tokyo Closed Tuesday, Wednesday Business Hours 11:00-14:00/15:00-19:30 Image
URL: https://prcdn.freetls.fastly.net/release_image/43703/118/43703-118-0256ccbb032e86643073bb6e3667a546-1999×1333.jpg To commemorate this partnership and the opening of PSA Lounge Tokyo, we will be holding the following campaigns: “Partnership Celebration! A campaign where you can win one of 100 PSA Cards” and “Opening Celebration! A PSA Lounge Tokyo Card will be given to the first 100 customers.”
https://prcdn.freetls.fastly.net/release_image/43703/118/43703-118-3b2bbae5544fa088570dedc424075518-1999×1066.jpg ■Celebrating the signing of our partnership! Campaign to win one of 100 PSA cards (10-8) in a lottery ＜Campaign Overview＞ During the campaign period, if you register as a member of the Snidan app and PSA app and participate in the campaign, 100 people will be entered into a lottery to win PSA (10-8) graded cards of popular Pokémon cards such as Pikachu, Charizard, and Mewtwo! ＜Lottery application period＞ Friday, September 12, 2025, 11:00 AM – Thursday, September 18, 2025, 11:59 PM 1. Install the Sunidan app and PSA app and register as a member. 2. Answer the survey on the campaign page 3. Repost of X’s post on Sunidan 4. Tap “Enter the lottery” on the campaign page. 5. Application completed ＜Winning announcement＞ 2025/9/22 (Mon) *The lottery results will be notified by email and via a notification in the Sunidan app. ＜Notes＞ • This campaign can only be entered via the app. • When registering, please register your name (first and last name), address, and phone number. • Winners will receive their item shipped to the address registered on their Sunidan My Page as soon as it is ready for shipping. • After winning, you will not be able to specify the card to be sent as a prize. Thank you for your
understanding. • Please note that we do not accept cancellations of lottery entries or cancellations after winning. • Each person may only enter once. • This lottery may be changed, canceled, or extended without notice. ■Grand Opening Celebration! The first 100 people to register will receive an original PSA Lounge Tokyo commemorative card. To celebrate the grand opening of PSA Lounge Tokyo, the first 100 people to apply for PSA grading at PSA Lounge Tokyo will receive an original commemorative card. Starting September 19th (Fri) 11:00 *Distribution will end once commemorative cards are sold out. For details on each campaign, please visit the special website below. https://snkrdunk.com/lp/psa-lounge-tokyo-open SODA will continue to take on new challenges, aiming to make Sunidan not just a place for buying and selling, but a platform where enthusiasm circulates and accelerates into even greater enthusiasm.