Neko no ongaeshi

Haru Yoshioka, a shy but noble high school student, rescues a cat from being hit by a truck, only to learn it's Prince Lune of the Cat Kingdom. With the cats' unwanted gifts and marriage proposal, Haru seeks help from Muta, a large white cat who leads her to Baron, a cat figurine given life by an artist. Haru is treated to a feast at the Cat Kingdom's castle, where she begins to transform into a cat. With the help of Baron, Muta, and Yuki, a white cat maiden, Haru escapes the kingdom and returns to the human world with more self-confidence.