Remilia, Flandre, and Sakuya from Touhou HD Wallpaper

Three anime girls are depicted in a battle scene against a dark, cloudy sky. The girl on the left has large black wings and wields a red energy weapon. The central girl wears a red dress and a large hat, with red eyes and blonde hair. The girl on the right has white hair and wears a dark outfit. Various colored crystals are scattered around them.