Based on my experience assessing brokers with a careful eye on transparency and practical accessibility, I looked closely at tobu-sec’s product offering and operational details. Tobu-sec is a Japan-based financial services provider regulated by the FSA, and it focuses on traditional instruments like stocks, bonds, investment trusts, futures, and options. However, after a detailed examination, I found no indication that tobu-sec supports cryptocurrencies—either as a deposit method or as a tradable product. There isn’t any mention of Bitcoin, USDT, or other digital assets being accepted for client funding. In fact, cryptocurrencies and even products like commodities, indices, ETFs, and cryptos are specifically noted as unsupported. In my conservative approach to risk and regulation, it’s vital for account funding methods to be explicitly laid out, especially when it comes to digital assets due to their legal and operational complexities in Japan. The absence of information about crypto deposits—and indeed, the absence of any cryptocurrency offerings—suggests that tobu-sec is not suitable if your goal is to interact with digital assets, either through deposits or trading. I would advise reaching out directly to customer service if you require absolute certainty, but from all available evidence, funding your account with Bitcoin or USDT is not possible at this broker. When handling your capital, especially with YMYL matters, I always recommend prioritizing regulated environments with clear, published policies for deposits and withdrawals.