The kind and elegant Fuyuki Kanda has a lot of fans, not least of whom is his cat Fukumaru! Surprisingly, however, not everyone sees the gentlemanly music teacher in this light. Hibino, a rival concert pianist, detests Kanda and his genius at the piano. But when Hibino's fickle mother forces a cat onto her grown son, Hibino finds himself with a furry new houseguest and little idea of how to take care of her! A trip to the pet store seems like the place to get a clue, but while there, who should Hibino run into but Kanda!