Kinyarwanda
7.000.000 speakers
0 language specific characters
ISO 639 code: kin
Kinyarwanda is a Bantu language spoken with about 7 million speakers who live mainly in Rwanda, where it is the national language along with French and English, and also in the Democratic Republic of Congo and Uganda. Kinyarwanda is closley related to Kirundi, which is spoken in Burundi and Tanzania.
A standardised spelling system for Kinyarwanda has been in use since the 1940s, though the spelling used by Roman Catholic and Protestant missions differ somewhat.
source
wikipedia.org, omniglot.com & ethnologue.com