Ethnic population: 13,100 (2000). Those under 20 are mainly monolingual in Japanese (1989 T. Fukuda).
Kagoshima Prefecture, northeast Okinawa, Kikai island.
Onotsu. Inherent intelligibility generally impossible or very difficult with Ryukyuan languages and Japanese [jpn].
Mainly older adults. Also use Japanese [jpn], especially the younger the younger generation (Wurm and Hattori 1981).