Sora Nagihara is a fictional character from Segu=T Takahiro's "Tama x Kiss" manga. She came to the 3D world to ask Shouta why does he obsess so much about 2D girls and, after she heard his answer, Sora decided she would help him to become the world ruler. She has outstanding reflexes, speed and strength and likes athletic activities. Her special skill is the "2D Art of Death".
She isn't the real Sora Nagihara but the original Sora from the first manuscript of "Tama x Kiss".