In a vast mansion, Coco lives alone except for her quirky black cat, Kuro. Together, they embark on daily adventures, oblivious to the dark reality looming over their town. While Coco revels in their carefree days, the town's residents fear both the encroaching malevolence and Coco's unusual presence. Unaware of the impending turmoil, Coco cherishes her tranquil life with Kuro, but their peaceful existence might be on the brink of change. Includes Volumes 1 to 3, spanning various intriguing chapters.