From Summer Rain:

Arashi has discovered a way to create and sell human-like dolls using sweet substances, dolls that are able to serve their master in different ways according to the "Dessert" they have been fed. Rokuka, one of Arashi's dolls, was fed a "love Dessert" and has therefore learned to love her master and wants to make her master happy. But what happens when she goes against Arashi's decision to sell her because of a love strung too deep...?!