About Cardster.net
Connecting Japan and the World through Trading Cards
Cardster.net is operated by YourJapan Inc., a Tokyo-based cross-border e-commerce company specializing in Japanese trading cards. For the past several years, YourJapan has been among the top 1–2 sellers in Japan and within the top 200 sellers worldwide on eBay (Cardster Signature Tokyo), trusted by collectors in more than 80 countries.
Building on this success, we launched Cardster.net on October 26, 2025 as our official D2C platform — enabling fans around the world to purchase authentic Japanese trading cards directly from Japan with confidence and transparency.
Our office and inspection center are located in Akihabara, Tokyo, where every card is carefully verified and packaged by passionate TCG experts. We are committed to delivering quality, speed, and trust, backed by global experience and Japanese precision.
Company Information
- Company Name: YourJapan Inc. (株式会社YourJapan)
- Established: April 22, 2021
- CEO: Ryuji Takahashi
- Address: Kanda Araki Building 3F, 1-14-6 Kanda-Sudacho, Chiyoda-ku, Tokyo 101-0041, Japan – Google Map
- Business License: Tokyo Metropolitan Police Second Hand Article Dealers License #303282216127
- Capital: ¥5,000,000
- Business Domain: Cross-border e-commerce and D2C sales of Japanese trading cards
Mission: Empowering global connections through Japanese trading cards.
Visit YourJapan Inc.
Founder & CEO
Ryuji Takahashi
Founder & CEO
YourJapan Inc.
Education
Graduated from Rikkyo University, Faculty of Economics, Department of Economics.
Earned a Master of Arts in English (M.A.) from the University of Wisconsin–Madison, USA.
Career
Engaged in marketing and e-commerce roles at both domestic and global companies.
Gained experience as a store supervisor, overseeing retail operations and team management.
Also worked in sales planning and international business development, contributing to strategic planning and execution from a global perspective.
Social Media
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Founder (Personal)
LinkedIn | X (formerly Twitter)