At a rural Japanese girls' high school, Anya, a mysterious transfer student with a dark past as a lethal asset for a Russian syndicate, harbors two hidden truths: a disdain for cats despite a life-saving necessity to interact with them. Teaming up with her feline-loving friend Kohana and the enigmatic Akira, Anya embarks on a peculiar quest to coexist with these whiskered creatures. Through the whimsical and perilous escapades prompted by their feline companions, the trio ventures into a unique and thrilling tale of unexpected friendships and daring exploits.