According to @YujiKumagai, he will contribute to a Japan-focused Web3 book project alongside the Digital Agency Minister, the Financial Services Agency, and the Bank of Japan, covering Entertainment and non-financial Web3 challenges; source: @YujiKumagai on X, Aug 12, 2025. No publication timeline, regulatory proposals, or token policy details were disclosed in the announcement, indicating no immediate market catalyst from this update; source: @YujiKumagai on X, Aug 12, 2025.