Nadeko Sengoku is a shy and introverted middle school girl featured in the anime series Bakemonogatari. Initially, she is introduced as a victim of a supernatural curse that manifests as snake-like apparitions wrapped around her body. Her character is defined by her reserved demeanor and a deep-seated fear of rejection. As the series progresses, Nadeko's character evolves, revealing her hidden complexities and darker aspects. She plays a significant role in the series, highlighting themes of adolescent struggles, unrequited love, and the dangers of suppressing one's true emotions.