Yasuko Nagumo is a fictional character from the anime and manga series Kyoukai no Kanata. She is known for her cheerful personality and her role as a spirit warrior. Yasuko possesses unique abilities that allow her to combat supernatural entities, making her an essential part of the story's conflict. In the series, Yasuko is depicted as a supportive friend and a skilled fighter. Her character development explores themes of friendship and courage, as she faces various challenges alongside her companions. The series blends elements of fantasy and action, showcasing Yasuko's growth throughout the narrative.