Nagaland feels like a country unto itself. Not like Myanmar (which it’s not.) But, also not like India (which it is, technically and legally.) Neighboring Assam and Manipur feel like India with a Tribal twist, but not Nagaland. It feels Tribal to its core.
Among the factors that contributes to this is that almost 90 % (88.1%) of it’s population is Christian. For some reason, the missionaries found this piece of the planet fertile ground. Buddhism has no presence in Nagaland at all, which is one of the things that makes it seem quite different from the SE Asian countries, which it bears a resemblance to in a number of ways (e.g. racially, architecturally, etc.)
But religion is just part of it. If you were to go by attire or what music is playing in the cafe (K-pop, US pop, and local music inspired by the aforementioned) one would be more likely to guess one was in Southeast Asia. And if you were to go by cuisine, you’d have no idea where you were. It’s not remotely like Indian cuisine except that the favored snacks are those of Ladakh and Sikkim [i.e. Tibet-esque; momos and noodle soup.] Still, it’s not like SE Asian cuisine excepting that steamed rice is a part of every meal and the pungent smell of fermented yam leaves (anishi) is a smell similar an odor I’ve encountered in Thailand. (But I see no reference yam leaves in Thai cuisine, so I suspect in Thailand its something else that’s fermented to create said smell.)