The Alchemist Who Survived Now Dreams of a Quiet City Life, Vol. 1 (manga)

Mariela is the last alchemist alive after waking from a deep sleep that lasted two hundred years. As the sole alchemist in town, she can make a killing from making and selling potions...but after two hundred years of suspended animation, all she wants to do is relax, take things easy, and live at her own pace!