In the bustling city of Seoul, amidst the chaos and noise, lived a stoic and enigmatic girl named Seo Ah-yi. She was not like other girls her age; she was a tomboy, uninterested in frivolous pursuits. But what set her apart from everyone else was her unique ability as a half-monster, she can make her eyes turn full white & With a single touch of her hand, she could end a person's life.