Bewitched In Tokyo.

Arisa is fascinated by humans. So much so that she leaves the magic world. But the broom she uses is faulty and she winds up in Japan. There she meets Joji Matsui who works at an advertising agency. Joji has been assigned by his boss Ichio Suzuki the difficult task of winning over Shiori Nomo who is in charge of corporate communications at a client. However a little word from Arisa helps Joji win over Shiori and his agency gets the opportunity to pitch. Arisa and Joji fall in love and marry. Arisa swears never to use magic again as she and Joji begin their strange witch/human married life.