Schierke is a young 'witch-in-training', and was once a disciple of the witch Flora. She is a member of Guts' Travelling Party.
Berserk
Berserk is a Japanese manga series written and illustrated by Kentaro Miura. Set in a medieval Europe-inspired dark fantasy world, the story centers on the characters of Guts, a lone mercenary, and Griffith, the leader of a mercenary band called the "Band of the Hawk". Themes of isolation, camaraderie, and the question of whether humanity is fundamentally good or evil pervade the story, as it explores both the best and worst of human nature. Both the manga and anime adaptations are known for their use of graphic violence and sexual content. source: wikipedia
