Michaela, your line of thinking for Miharu is also bad, since couldn't the future have cleaner air due to improving technology?[Valid point made]
Also no one was ever imprisoned or killed on the basis of their cloths, unless the cloths made a political point.
In fact, Miharu might be the only one dangerously out of style in the past, just because of gender things[Women were expected to dress and act a certain way that Miharu does not follow]
The rest of us are guys, and although the clothes might be brightly colored for the time that might state RICH over DANGEROUS since clean clothes were a luxury as well as bright dyes.
The basic clothes are the same, some sort of pants, a shirt, a hat actually wouldn't seem that out of place either but the general attire for women was a full body dress, which Miharu lacks.
Or I just felt like making an unnecessarily big deal out of this and it doesn't matter.