Akumi Kisaragi is a central character from the anime series 'Akumi to Koi no Kurayami.' She is depicted as a mysterious high school student with a dark past and supernatural abilities. Akumi often finds herself caught between the world of humans and spirits, struggling with her own identity and the expectations placed upon her by her family. Throughout the series, she plays a pivotal role in guiding the protagonist through various challenges, acting as both a mentor and a rival.