The story revolves around female protagonist Nina Yamada, a seventh grader who accidentally swallows the Crystal Pearl thinking it was candy.

Two of the examinees decide to protect her from the other students while they work on a potion to extract the pearl from Nina.

Nina Yamada is a seventh grade student who dreams about a prince charming who will always protect her, no matter what.

One day, Nina accidentally swallowed a Crystal Pearl that she assumed was candy that came with her cake.

During this whole mix up, she meets two wizard boys named Zero and Ichii and comes to the conclusion that they protect her until a potion is made to remove the Crystal Pearl from her.

The series was then serialized in Nakayoshi beginning with the February 2003 edition (released on December 3, 2002) and concluded two years later in June 2005.

The episodes were rebroadcast by Tokyo MX, KBS, Sun Television, and several other stations within a few days of the initial broadcast.

Lollipop, Funimation released the series as a single DVD box set on February 24, 2009.