- Samson Mow met Japanese party leaders to discuss creating a Strategic Bitcoin Reserve for national policy.
- DPP and Sanseitō now hold 37 seats, giving leverage in committees on crypto taxation reforms.
- Metaplanet, Quantum Solutions, and other Japanese firms expand Bitcoin holdings as yen weakens.
Japan’s political debate on Bitcoin has shifted closer to the mainstream. Samson Mow, chief executive of JAN3, met in Tokyo with Yuichiro Tamaki of the Democratic Party for the People (DPP) and Sōhei Kamiya of Sanseitō. The meetings centered on whether Japan should create a Strategic Bitcoin Reserve, similar to a program announced earlier this year in the United States.
Mow called the talks constructive. He said,
“We had very productive meetings in Tokyo with Kamiya-san, leader of Sanseito, and Tamaki-san, leader of the DPP. Both leaders already had a great understanding of Bitcoin so our discussions flowed very naturally.”
He added that nations have only a “limited window of opportunity” to accumulate large holdings.
Both parties have already raised Bitcoin issues in the Diet. Kamiya has supported the idea of reserves and called for tax changes tied to Sanseitō’s sovereignty-first approach. Tamaki has promoted a 20% capital gains tax rate on Bitcoin and wants smaller swaps and payments excluded from taxation. Mow said,
“These are activities they have done previously in the Diet.”
The DPP now has 22 seats, and Sanseitō follows with 15, signaling a change in balance of power after the Japan elections earlier in July 2025. Both the ruling LDP and Komeito fell short of majority. However, both parties did gain leverage in committee work, which included financial legislation.
Wider Political Engagement
Mow also met with Satsuki Katayama of the LDP at the WebX Asia event. Katayama chairs the party’s Committee on Finance and has been active in policy areas covering markets, banking oversight, and digital assets. Her position suggests Bitcoin policy is being examined inside the LDP’s finance structure as well.
JAN3 linked the Japanese debate to wider global changes, pointing to the U.S. decision in March 2025 to set up a Strategic Bitcoin Reserve. Days later, the BITCOIN Act was introduced in Congress to scale that plan.
JAN3 CEO @Excellion met with Sohei Kamiya @jinkamiya, leader of Sanseito, and Yuichiro Tamaki @tamakiyuichiro, leader of the Democratic Party for the People (DPP), at their offices in Tokyo to discuss the urgency to create a Strategic Bitcoin Reserve for Japan. 🇯🇵
Diet Members… pic.twitter.com/a5jWUEoo1f
— JAN3 (@JAN3com) August 27, 2025
Corporate Moves and Market Context
Japanese companies have also increased exposure. Quantum Solutions has announced plans to buy up to 3,000 BTC in the next year. Metaplanet, a Tokyo-based treasury firm, lifted its holdings to 18,991 BTC after its latest purchase of 103 coins. Other listed firms, including ANAP Holdings and Remixpoint, have made similar moves, citing yen weakness and low interest rates.
At the time of writing, Bitcoin’s value was $113,862. Armstrong, the CEO of Coinbase, expressed optimism about the price of the asset, expecting it to hit $1 million by 2030 given regulatory clarity in the States and holistic adoption.
