The collecting and trading of cards, once a pastime confined to the schoolyard, is now a lucrative global market. Fierce demand has driven up prices to the extent that a single card can be worth millions of dollars. In February, a rare Pokemon card owned by YouTuber Logan Paul was sold for about $16 million. The domestic market grew by 90% to ¥338 billion ($2.1 billion) in the four years to 2025. For Japan's government, the increasing financialization of the trading card market is problematic. The group heard that card values are largely determined by a U.S. company, despite the Japanese origins of the likes of Pokemon and Yu-Gi-Oh.