A young Taiwanese assassin codenamed Glass Heart committed suicide by jumping off a building, and her heart was pierced by a metal fence. Miraculously, her life was saved by heart transplantation. During her recovery she began to experience strange dreams

A forty-year-old single woman, obsessed with City Hunter manga, is hit by a train only to find herself in the world of her favourite manga. Big fan of Ryou Saeba since her teenage years, she will do all she can to live a love story with him.