Yusa Kurobane is a key supporting character in the anime series 'Charlotte.' She is a cheerful and kind-hearted girl who works as an idol and is also a member of the student council at Hoshinoumi Academy. Yusa has a unique ability to act as a medium, allowing her late elder sister Misa to possess her body and use pyrokinesis. Her dual personality, alternating between her own innocent self and the tough Misa, adds complexity to her character and enriches the series' narrative.