Mahou no Jumon

Nomura Chizuko - a witch - is bored with her everyday life in the magic world. "That's it! I'll go to the human world and get some new motivation!" With that in mind, she heads off happily to her new life in the human world. With her childhood friend, Oosawa Nobuko, sticking close by her everyday to watch out for Yurine, a human who dreams of becoming a magician that befriended Chizuko after she arrived and is now doing as she pleases with Chizuko.
Source: Baka-Updates