Two sets of pretty rori Sisters comes up in good friends. Never provoked a man from oneself. Security that the family was by the side at home might produce a chance of the Kokoro. Far from calling for help even if be attacked suddenly in one's room by a man knowing each other by sight, cannot start the voice. The tragedy of the Elderly Sister chains Younger Sister before long. The Yami which hides behind in happy Nichijou. What know nothing only as for mother…
