Aty used to be an elite soldier in the Empire's army before leaving to become a private tutor for a single child. When she embarked on a boat trip with that child to the regional capital, their ship was attacked by pirates and she was tossed into the ocean. There, a mysterious voice guided her to acquire the power of the magic sword Shartos, which enabled her to rescue her pupil.
In time, she and her charge drifted onto an unknown island, where they met the native inhabitants pirates, and the guardians of the island's village. Soon she also came to learn about the mysterious relic known as the Evocation Gate and the secrets about her new sword.
Aty is naturally polite and gentle, and sometimes she seems unaware of the ramifications of her actions, but she is also devoted to her pupil and friends and will do anything she can to protect them. She also teaches at the Summoner's Institute.