In a small town in Japan, there once was a legend that there was a witch by the name of Myoui Mina, and she lived in the dark woods outside of your town. Legend says that she captured two teenage girls, Hirai Momo and Minatozaki Sana, and cursed them into cat-human hybrids, Momo as a feisty black cat and Sana as a soft white cat. They were cursed into not only as cat humans, but to eternally stay with the witch, Mina, to be her loyal companions. The witch has never been seen by the public eye.