I got curious this chapter, and I'm probably stupid for wondering, but still.
The people of the forest (I can't remember if they are literally called/referred to as that or if I'm being simplistic in my description, anyway) are primarily of darker skin tones, certainly darker than the Japanese MC. Are they "tan" because they primarily work outdoors (which I don't believe to be the case/reason) or do they naturally have darker skin tones?
Also, the people of the town/village are primarily of lighter skin tones, clearly not tan (in any way); at least the ones that we have been shown.
The third group of people, who I believe were nomadic(?), were also of darker skin tones...
So, two things that I noticed, the people who are more developed (i.e. a town with more sturdy permanent buildings, yes, the people of the forest have buildings, but from what I can see they appear more simplistic than the village/town) are light skinned, and the people who are (supposedly) less developed (small groupings of buildings, not using "formed" currency - meaning they use the tusks in more of a bartering system that the town's [likely] metallic currency, which they ONLY use with the town, etc) are primarily dark skinned...
Am I completely off base here? Please tell me I'm simply misinterpreting this...
Ah... And writing the above (carefully to try and not hit the more "offensive" wording) has made me completely forget the second point... Meh. I'll add it later if I remember.