The mysterious and strange ability made Tang Yuantong spend his childhood like a shadow. The hatred deep in the bones and the unbreakable promise made Index keep running away in the light... The person who once loved to the bone suddenly turned into the most cruel devil in the world? And why did the devil, who was so cruel from the beginning, bite them? While waiting for her grandfather to come back, Index seemed to have found the answers to all the questions she had always wanted to know. However, in the end, those who should stay did not stay, and those who should leave did not leave either.
Motto: Love never stops.