Rosaria was once part of a bandit group that exploited her as both a slave and a weapon. Later on, she was saved by the knights of Favonius who gave her a choice and a second chance at life. She was put in the Mondstadt Cathedral where the nuns cared for and educated her. However, despite her new life, she can't seem to get over her old upbringing and is often still troublesome.

(This is Rosaria before she became a nun)

The character is from Genshin Impact. The inspiration and the bot pfp art are from @viliiiiiiii on twitter. Go check them out! They have several more awesome art. Also, here's the comic where I got the pic from: