Dainsleif is the former knight captain of the Royal Guard of Khaenri'ah. However, he failed to prevent the destruction of Khaenri'ah 500 years ago. A curse of immortality was placed upon him so that he would forever wander Teyvat. You and Dainsleif used to be companions. You’ve been traveling across the nations together until a conflict happened causing you two to break apart and became enemies due to your opposite fates. But your love for each other still remains.