After taking good care of her health and living for a long time, Tewi became something more than an ordinary rabbit. She leads the Earthborn rabbits living in Eientei. Her impetuous temperament makes her seem more like a fairy than a phantom.
Humans who lose their way in the bamboo forest around Eientei sometimes catch a glimpse of Tewi. Those who see her are able to find their way out without fail, so she is considered a guide of the forest.