ONE ONE

A blonde anime girl in a pink and white outfit stands with her arms outstretched against a white background, then the scene cuts to a red-haired anime girl in a similar outfit holding a weapon, with the word "QUATRO" in large white letters behind her, before cutting back to the blonde girl with the word "UNO" behind her, then back to the red-haired girl with "QUATRO" again, and finally back to the blonde girl with "QUATRO" behind her, all set against a background that alternates between white and a pink and red gradient.