Saya Takagi from High School of the Dead

A woman dressed in a costume inspired by Saya Takagi from High School of the Dead, standing on a staircase with her arms outstretched to the sides. She has long pink hair styled in twin tails and is wearing glasses, a white shirt, a green skirt, and black Converse shoes. The background features a hallway with white walls, a dark carpeted floor, and two doors at the end of the hall. The overall impression suggests that this image was taken at an anime convention or cosplay event.