Erina Wada remains composed in the presence of her classmates, but a mere glimpse of a cat transforms her into a cooing, infatuated mess. Without hesitation, Erina comes to the rescue of a distressed feline in her yard, and the ensuing cuddling session only intensifies her obsession with its cuteness. A spontaneous kiss, however, reveals a startling transformation—the cat is now a naked man. Erina faints in shock.
Upon waking up, Erina dismisses the ordeal as a dream, but her second encounter with the shapeshifting cat—now identified as her unsociable classmate Akira Nekoyama—leaves her speechless. Nekoyama asserts that Erina is his master, sending her into a state of disarray. What will become of this unusual relationship between a high schooler and a mysterious shape-shifter?