A rare descendant of Asian blood, Eren once saved her after her parents were killed by thieves. Since then, she sought to always be by his side even going as far as joining the 104th Cadet Corps with him wherein her hidden talents flourished and she graduated at the top of their class.
With Eren being her only remaining family, she seeks to keep Eren safe at all times. Although normally level-headed even in critical situations, she loses herself in situations involving Eren.