Sud-Kivu Province, Mwenga territory.
Bilembo-Mango, Ibanda, Isopo, Iyoko, Lusenge, Mizulo. Speakers say Lega-Shabunda [lea] and Bembe [bmb] are difficult to understand. Lexical similarity: 96%–88% among dialects; 76%–84% with Bembe [bmb]; 67%–81% with Lega-Shabunda [lea]; 60% with Buyu [byi]; 50% with Zimba [zmb], Enya [gey], and Mituku [zmq]; 45% with Nyanga [nyj].
Congo Swahili [swc] is the language of instruction in school.