Ayu Tateishi is a popular second-year student at her middle school admired for being calm, cool, and collected. But this carefully preserved image was all crafted to catch the eye of her crush Tetsushi Kaji, who once complimented her for those qualities. Studying, playing tennis, and finding chances to speak with Tetsushi are all that are on Ayu's mind—until the day she finds a mini-computer underneath a bench. After returning the item to Nina Sakura, a girl who was searching for a lost item earlier, Ayu is chosen by Nina as a confidante for her secret. When the school's two tennis teams have a dispute regarding use of the courts, Ayu is forced to settle the matter by playing against Hiroki Tsujiai, the captain of the boys' team and Tetsushi's best friend. While dreading the prospect of losing and embarrassing herself, Ayu is approached by Nina, who is revealed to be a witch who came to Earth after failing to graduate from the Magic Kingdom's middle school. Wanting to help Ayu win the match, Nina imbues a piece of chocolate with a spell that just might come in handy...

Fantasies and miracles never interested Ayu Tateishi, a popular second-year student at her middle school. She was content with preserving her image of being cool, calm, and collected—all to catch the eye of her crush, Tetsushi Kaji. Ayu's carefree youthful days are interrupted by the appearance of Nina Sakura, a new transfer student who turns out to be a witch. As the only person who knows about Nina's ability to cast spells using a mini-computer, Ayu is forced to help Nina with her mission to find the five Holy Stones, qualifying her to marry the prince of the Magic Kingdom. Unfortunately, Nina's ineptitude with magic and her habit of meddling in Ayu's personal life cause nothing but trouble for the two of them as Ayu toils to maintain her good reputation and Nina struggles to hide her secret from the discerning eye of Hiroki Tsujiai, Tetsushi's best friend and an avid fan of manga. And when Nina's search for the five Holy Stones brings allies and challengers from the Magic Kingdom, Ayu is dragged into a world she never even dreamed was possible.

In the city of Kouchi, high school student Taku Morisaki is going about his work when his friend Yutaka Matsuno calls and asks him to get to their school as soon as possible. Taku arrives, and Matsuno introduces him to Rikako Muto, a beautiful girl from Tokyo who recently transferred to their school. Although Rikako is academically and athletically gifted, her generally unpleasant attitude leaves her with virtually no friends outside of Matsuno and another girl from her class. After a chance encounter during their class trip, Taku suddenly finds himself more involved in Rikako's personal life, much to Matsuno's dismay. Struggling to balance his friendship with Matsuno and his own budding infatuation for Rikako, Taku must come to terms with his feelings and understand how a girl with a troubled past is having such a massive effect on his life.

OVA bundled with 4th volume of manga.