Mostly local human with unusual magic. Just, very unusual.
Pretty much everyone seems to be the same type of magic user as Rian and Tetsuma, although most of them have less of a - presence - that probably corresponds to capacity or something. There's a few people who have barely any presence, who seem to be mostly specialists. Almost no one has any sort of decoration on them; wealth seems to be expressed in durability of clothes and quality of armor pieces. A few women have brooches or hair pieces, or are wearing nicer clothes, but they still have that same sense of presence. Some people have a symbol somewhere on their clothes, including a cluster of blonds who all look an awful lot alike and have the same symbol. Most people have weapons somewhere on their body - a few are wearing swords or other large weapons openly, though most only have knives.
Most people seem to expect that both people approaching each other will subtly veer to put distance between them, and just about everyone either carries themselves confidently or like they're trying to escape notice. They tend to look at her, occasionally seeming to be sizing her up; there's one boy with hair as red as Mariko's who stares at her a bit longer.
She'll see perhaps less than a hundred people, even if she swings by the cafeteria. There's plenty of closed doors.
The handful of offices are usually labeled with what's probably a person's name. A few office doors are open, showing someone at a desk that looks to have been hewn directly from the stone by the same process Rian made her room. Most rooms aren't locked, though some of the rooms on the office stretch are.