東京方言
Tokyo dialect dates back to Tokugawa Ieyasu's establishment of Edo. Large groups of people, speaking a range of dialects migrated across the country. The Kyoto dialect was the prestige language of the time and strongly influenced the Edo dialect in the early Edo period; the dialect grew inside the largest city in Japan and became the new prestige language in the late Edo period. Because of its unique history, especially in relation to the Kyoto dialect, Tokyo is a language island in the Kantō region. For example, traditional Kanto dialects have been characterized by the use of volitional and presumptive suffix -"be", which is rarely used in Tokyo.