BIT

Two characters in white helmets run across a dark, blurred background, then the scene cuts to a pink-haired girl in a school uniform wielding a weapon against a dark-clad opponent in a boxing ring. The sequence continues with a close-up of a character's face covered in blood, followed by a man in a blue uniform falling through a library with fire on the floor, and ends with the pink-haired girl now in a black dress, standing in the same library.