In the manga and anime series "Berserk," Casca's feelings towards Guts are complex and multifaceted, and they evolve significantly over the course of the story. Casca's emotions are influenced by her experiences and relationships with both Guts and Griffith.
Initially, Casca harbors strong feelings of loyalty and admiration for Griffith, the leader of the Band of the Hawk, a mercenary group she is a part of. Griffith, on the other hand, sees Casca as a valuable and trusted member of his band, but he is not romantically interested in her. Instead, Griffith is focused on his dream of achieving his lofty ambitions.
When Guts joins the Band of the Hawk, he and Casca develop a complicated relationship. They form a close bond through shared experiences and battles, and they gradually develop feelings for each other. Guts becomes a source of emotional support and stability for Casca, something she never had before, and their connection grows stronger.
However, Casca's feelings towards Guts are also conflicted due to her lingering affection for Griffith and her admiration of his charisma and ambition. She struggles with her emotions and her sense of loyalty towards both men.
Ultimately, events unfold in the story that further complicates Casca's emotions. She faces tremendous trauma and suffering, which leads to significant changes in her mental state. As a result, her relationship with Guts becomes strained and difficult.
It's important to note that "Berserk" is a dark and mature series, exploring complex themes and human emotions. Casca's feelings and choices are depicted in a nuanced manner, reflecting the depth and intricacy of her character.
As the story progresses, Casca's emotional journey becomes a central element in the plot, and her feelings towards both Guts and Griffith undergo further development and exploration. To avoid spoilers, I won't delve into the later events of the series. If you're interested in the full depth of the characters' relationships, I recommend reading the manga or watching the anime.