Mystery

Two anime characters, one with blue hair and one with red hair, are shown in various states of distress and exhaustion on a wooden floor, with the red-haired character lying on her back with a pained expression and the blue-haired character lying on her stomach, while a third character with white hair and horns lies on a pink surface with a glowing collar, all set against a background of pink sparkles and a yellow "KEEP OUT" sign.