Marudea Sora is a fictional character from the anime series 'Yosuga no Sora'. As a pivotal character, Marudea plays a significant role in the unfolding of the series’ narrative. She is known for her mysterious aura and deep connection with the main characters. Her presence in the story brings forth themes of love, desire, and the complexities of human relationships. Throughout the series, Marudea's interactions and decisions significantly impact the course of events, making her an essential part of the story's progression.