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A translucent, smiling face with multiple eyes appears within a glowing circular portal in a futuristic, blue-lit environment. The scene cuts to a dimly lit cave where a pink-haired girl and a boy in a white suit stand with their backs to the viewer, while a purple-haired girl sits on the ground looking up at them. The scene then cuts to a close-up of a hand pulling down the skirt of a character with light blue hair, revealing their thigh and the top of their grey stockings.