Ultra Maniac OVA

Ayu Tateishi carefully maintains a calm, collected image because it once earned a compliment from Tetsushi Kaji, the boy she likes. Her orderly plans are disrupted when she returns a lost miniature computer to Nina Sakura and learns that the new girl has an extraordinary secret.

Nina is a witch, and she is eager to repay Ayu’s kindness. When a dispute over the tennis courts puts Ayu in a match against the boys’ captain, Hiroki Tsujiai, Nina offers magical assistance. Ayu wants to avoid embarrassing herself in front of Kaji, but accepting help from an inexperienced witch brings a different kind of uncertainty.