Nanami Yasuri is a slender girl with long dark green hair and purple eyes adorned with pink cherry blossom markings. She is gentle and soft-spoken but terrifying to face during a fight. Nanami lacks basic human understanding and empathy, showing a severe disregard for human values. Her fragile exterior hides a bloodthirsty nature that becomes more pronounced as the story progresses, leading to insanity and fatalism due to her physical suffering.