Which countries share the same language family with Japan?

Japan's official language is Japanese, which belongs to the Japonic language family. However, there are a number of other languages spoken in Japan, including:

* Ainu: spoken by a small group of indigenous people in Hokkaido

* Okinawan: spoken on the Okinawa islands

* Hachijō: spoken on the Izu islands

* Amami Ōshima: spoken on the Amami islands

In addition to these, there are also a number of sign languages used in Japan, including:

* Japanese Sign Language (JSL): the official sign language of Japan

* Ryukyuan Sign Language: used on the Okinawa islands

* Hachijō Sign Language: used on the Izu islands