Shionomiya Ayane wa Machigaenai.

Two siblings, Ayane and Kurumi, possess supernatural abilities called "Ghosts," each assigned a numerical score. Ayane's score is "7," granting her the power to manipulate shoelaces, while Kurumi holds a "11" and can create contracts with objects to control them. Ayane struggles with feelings of inadequacy compared to her sister. The story explores whether she can demonstrate her worth in battles against other individuals with Ghost abilities.