I thought the costumes rather reminded me of the Saami of Northern Scandinavia, but not being familiar with every native costume of the world wouldn't like to presume the manga's source material.
that's alright. its okay to assume esp here where everything is so vague ...no harm there. i personally thought the costumes esp the belt making was a bit Mongolian in nature. but considering the similarities in so many cultures..it is fascinating. (=・ω・=)
You're more likely to be right than me, considering it's closer to 'home'. And I had the same thought, fascinating how similar cultures can be despite being so far apart. :)
I like the beautiful art & the costumes.. Somehow remind me of
http://www.mangago.zone/read-manga/otoyomegatari/
beautiful art. also i am an indian nepali and the place drawn has an uncanny resemblance to katmandu nepal. if you google it the first pages are like 100% same. the gumba, the steps.. everything. lol. made me love the story more. (づ￣ ³￣)づ