Sugar Sugar Rune
is a Magical Girl
series. Originally a manga by Moyoco Anno, it was adapted into a 51 episode anime in 2005.
Chocolat and Vanilla are two young witches
from the Magical World, the best of friends despite being polar opposites. They're both chosen as candidates to become the Magical World's future queen.
But in order to prove themselves, they must venture into the Human World and collect "hearts" - extracted human emotions representing how a person feels towards you. Whoever captures the most shall become queen.
They're aided by their mentor, the witch pop-idol Rockin' Robbie; their familiars, Chocolat's lazy frog Duke and Vanilla's stuck-up mouse Blanca; and later, their friends from the Magical World, Houx and Saule, who transfer to their school in order to protect them.
But competing for hearts isn't all they have to deal with. Something evil is drawing near the Queen Candidates. Could it be the mysterious middle school boy Pierre, who's taken an interest in Chocolat?
Sugar Sugar Rune provides examples of: