Eskimo eSIM does not provide a true unlimited high‑speed data plan for Japan. The plans that carry “Unlimited” in their names actually supply a fixed 1GB of high‑speed data per day; once that amount is used the speed drops to 512 kbps. These are the only options named as “Unlimited” but they are capped, not unlimited.  
Instead Eskimo eSIM offers a range of fixed‑data plans that may suit travelers who need more data. For example, a 10GB plan is available for 730 days at $25.00 USD and a 5GB plan for the same period costs $14.00 USD. Larger global plans such as the 30GB/2‑year plan also cover Japan. Fixed data plans give a clear limit and no throttling after the limit is reached, which can be more economical unless very heavy data usage is expected.