Metaplanet, a Japanese investment company, has raised 2 billion yen through an interest-free bond to expand its Bitcoin portfolio.Metaplanet aims to accumulate 10,000 BTC by 2025 and eventually achieve 21,000 BTC by 2026.The company recently acquired an additional 162 BTC, bringing its Bitcoin reserve to 3,050 BTC.Metaplanet is following a strategy similar to MicroStrategy by issuing interest-free bonds to leverage Japan's low-interest rate environment.