unTouchable is a dark supernatural romance manhwa set in a modern world where vampires live hidden among humans, following Sia Lee, a powerful and beautiful vampire who feeds not on blood but on human energy through physical contact, and whose carefully controlled existence is disrupted when she meets Jiho Shin, a reclusive germaphobe whose extreme fear of touch makes him immune to her abilities, pulling both into an unusual relationship filled with tension, curiosity, and slow emotional change. As their connection develops, the story explores themes of loneliness, desire, consent, emotional boundaries, and the fear of intimacy, balancing sensuality with psychological depth as both characters confront their past trauma and personal walls. Blending supernatural, romance, drama, and mature themes, the series gained strong popularity for its unique premise and character-driven storytelling, also known as unTouchable webtoon, 언터처블, Untouchable manhwa, unTouchable Massstar, Sia Lee vampire, Jiho Shin, vampire romance webtoon, mature supernatural romance, and Korean fantasy drama webtoon.