Blue Snow (2005)

During summer break, a couple of friends decide to play a test of courage by hunting down a rumoured ghost that's supposedly appearing throughout the city. During their quest, Haruka starts seeing something that her friends are unable to...blue snow. It's a futuristic inter-dimensional struggle of good versus evil with the highest of stakes: total annihilation of all space-time. Two friends in the present must now help freedom fighters from the future battle the evil dimension Shangri-La. With the help of a group known as the Dragon Calvary, Haruka and Yuu travel through space and time to save the universe from eminent distruction. Must see anime at its finest.