Nadeshiko Fujisaki is a student in the same year as Amu and serves as Queen's Chair of the Guardians. When Amu rejected the offer to join the Guardians, Nadeshiko tries several tactics to convince Amu to join. The two become best friends and Nadeshiko looks over and supports Amu in her love life. However, before Amu and Nadeshiko enter the sixth grade, Nadeshiko leaves Seiyo Elementary to travel to Europe to study dancing.
Source from Wikipeida