Y

A red-haired anime girl with golden eyes looks up with a gentle smile, her expression shifting to one of longing as the subtitle "Don't leave me alone..." appears, followed by a brief cut to a chibi-style scene of her falling into a maze-like structure, then a close-up of a blonde girl with pink eyes smiling, and finally a wide shot showing the red-haired girl crouching on the floor while the blonde girl floats in the air against a wall covered in red flowers.