What are the other options to access the Internet in Japan?
Another option is to rent a mobile Wi-Fi router, also known as a pocket Wi-Fi. These devices provide a portable Wi-Fi hotspot that you can carry with you and connect to multiple devices. Japan, your plans there, and your needs in terms of data. Alternatively, you can also buy an eSIM card. Each one has its own advantage, depending on the number of people in your group, and the time you will stay in.