The Mages' Association was once a respected organization where powerful mages gathered, but as it expanded, it began performing dangerous experiments, and as a result it was shunned by the general public. After being denounced as a harmful organization, they disappeared from society. Mikage's older sister, Tsukimi, who lived with her in the forest, disappeared without a trace after joining that organization. Join Mikage on her quest to uncover the truth behind the organization, find her sister, and bring her back