Ethnic population: 13,100 (2000). Those under 20 are mainly monolingual in Japanese (1989 T. Fukuda).
Northeast Okinawa; Kikai island.
Onotsu. Inherent intelligibility generally impossible or very difficult with Ryukyuan languages and Japanese [jpn].
Mainly older adults. The younger the generation, the more fluently they speak Japanese [jpn] (Wurm 1981).