She is usually characterized as very, very shy, but she tries to overcome it by approaching especially intimidating people, for example Colonel Bradley Myers during the 2019 Ball at Schloss Zyng.
Very, very shy. Loves gardening.
It is clear to anyone watching, that Sunna is crushing on Bodo, hard, despite him being seven years younger then her.
To her sister and her best friend, Sunna has a good and firm relationship,
Despite Naya's little brother being Sunna's crush, the two get along very well.