Pakke-Kessang is a district located in the state of Arunachal Pradesh in the Northeast of India.

[5] Seijosa is a small area within Pakke-Kessang along the Pakke river that is inhabited by the Nyishi, Galo and Puroik people.

[6] The district is inhabited by various tribes of similar origin but with distinct cultures and beliefs, practicing the Donyi-Polo religion.

Other tribes, especially the Gallo, Puroik are found in regions near the Pakke, Passa, Papu, Dissing and Passo river.

Festivals such as the Nyokum of the Nyishi, Gumkum-Gumpa of Puroik and Mopin of the Gallo are celebrated in full flair in Pakke Kessang Distt.

[7] At the time of the 2011 census, 85.05% of the population spoke Nyishi, 2.94% Nepali, 2.53% Adi, 1.59% Bengali, 1.37% Hindi and 1.28% Assamese as their first language.

[13] Koro was recognized as a separate language in 2010 by a linguistic team of David Harrison, Gregory Anderson, and Ganesh Murmu while documenting two Hruso languages (Aka and Miji) as part of National Geographic's "Enduring Voices" project.