Doraemon: Nobita no E Sekai Monogatari

映画ドラえもん のび太の絵世界物語

Doraemon, Nobita, and friends enter a painting into a medieval European world. In the painting, they meet Claire and Milo, children from the country of Artoria. They also encounter a small demon with wings named Chai. Together, they face a powerful enemy for a legendary jewel. (Source: Anime News Network)