Toshiharu meets man and woman intertwining with each other at a street corner of the coming home in the morning after having drunk. Looking Toshiharu is excited at the act in the passage of the abolished building which the public eye does not get, and come to must keep an eye on it. Toshiharu heard from the mouth of an excited man that a voice called "the Eri" was overheard clearly…. That want Toshiharu who left the company to confirm safety of Younger Sister, the Azusa Natsuki not to get of the communication from a friend afterwards; thereafter is gaatta. In the told address, there was a figure of a woman, Eri connected with each other before in an abolished building.
