Oujisama no Kainushigakari: Norowareta Denka ga Mofumofu Body de Sasottekimasu

In the residential area of the royal capital, a socially anxious apprentice witch, Miranda, manages the storefront of an enchanted medicines and sundries shop. Her quiet life is interrupted when an invitation to a royal tea party arrives. At the palace's greenhouse, she encounters Prince Heinrich—but...as a cat?! Cursed to take the form of a fluffy feline, he then shockingly requests her to become his keeper! Thus begins the slightly suggestive tale of a witch with a handsome prince as a familiar!

(Source: Square Enix)