Overlord

Two characters in white and red uniforms ride a large, dark, winged creature through a forest, their expressions shifting from surprise to determination as they grip its back. The scene cuts to a close-up of a character with spiky blue hair, then to a red armored figure with glowing wings, followed by a skeletal-faced villain with red eyes and a wide grin, and finally to a close-up of a purple and gold patterned fabric.