Qoo

A young witch who is very untalented with magic. Witches who cannot perform magic by the time they are sixteen are sent to the human world, a fate all witches fear. Arusu helped her gain confidence in herself. When Arusu turned herself to stone to save the witch's town from a rampaging sprite, Kuu used her own hair to perform the counterspell that would turn Arusu back to normal. Later in the series, she appeared again when her grandmother became one of the witches who lost their magic.