JCB GLOBAL WIFI Potable Wifi (Pocket Wifi) Rental Service
JCB Global Wifi offer one pocket WIFI using softbank network.
Their Wifi network is wide and stable.
You can rent a pocket WiFi router covering a large areas compatible with the softbank network.
They have return box which you can return mobile wifi at airpots in Japan.
They accept JCB Card Only!
Unlimited data, covering local areas!
SoftBank is a parent company of Y!mobile, and they offer the network wider than Y!mobile's.
Available with the areas compatible with 4G LTE, and the data communication is available in the areas as wide as ones offered by docomo and au.
Some WiFi routers provided by SoftBank offer unlimited data services, and which are said not to be limited on the data much.
However, they offer only a few as a rental service for travelers.