ニオ・アルトゥール

Nio is a bright young girl who helps her older sister with her herbalist's workshop. She was separated from her sister during a journey, and came to Corseit in order to investigate The Unexplored Ruin. Nio is now a travelling apothecary, and during her journeys she is making a living from selling medicine and sometimes helping out in various shops.

(Source: Atelier Wikia)