Akatsuki

Akatsuki is a highly skilled level 90 Human Assassin with the Tracker subclass who meets Shiroe and Naotsugu soon after the Apocalypse. Shiroe gives her an appearance-changing potion that lets her avatar resemble her real self more closely, and she becomes deeply loyal to him, addressing him as "Master." She is sensitive about her height and dislikes being mistaken for a child.