A narrative of love, adventure, and humor comes from Minase Hazuki's light book series. Yachi Haruaki is a high school student who is inherently impervious to curses. Haruaki awakens to discover a naked female named Fear waiting in his kitchen after his father sends him a strange black cube. She is the human manifestation of the cursed black cube — and a torture device! Fear battles with Haruaki, using her particular talents, to combat other cursed instruments and their owners.