eSIMNow does not provide an unlimited data eSIM for Japan. The provider’s plans for Japan are fixed data bundles, each with a specific data cap and validity period. For example, the Japan 50GB 30Days plan offers 50GB of data for 30 days, and the Japan 50GB 180Days plan offers the same data amount for 180 days. These fixed data plans can be more cost‑effective for most travelers, unless the user is an extremely heavy data consumer who would benefit from a truly unlimited option.