Supera link does not provide any unlimited data eSIM plans for Japan. Instead the provider offers fixed data packages for travelers. For example, a 30‑day plan with 20GB of data is priced at $22.28 USD, while a 30‑day plan with 10GB costs $12.14 USD. Daily‑priced alternatives are also available, such as a 1‑day 5GB plan for $2.57 USD. Choosing a fixed data plan can be more cost‑effective for most users, especially those who need large amounts of data, but Supera link’s Japanese plans do not include an unlimited option.