The story of the OVA animation "Chocolate and Vanilla" tells the story of the protagonist Mizunozuki Kasho who left his hometown, a traditional Japanese pastry shop, and ran a cake shop called "LaSoleil" as a Western pastry chef. However, in the luggage sent from his hometown, the humanoid cats Chocolate and Vanilla were mixed in. Although Kasho wanted to send them back to their hometown, he still kept the two cats at their request, and then he ran "LaSoleil" alone with the two cats.