The brother who visited Japan from the United States to look for separated father. Because there is not the money, there are few stay days. And there is no clue. The brother of the good-natured person whom what had you tell the rope of the request from the friend in the American Japanese friends who studied abroad alone completely trusts though "facebooki" (feisubokki) and "boine" (boin) of the smartphone application, such a thing cannot be helpful. Is father found as expected? And what is the true reason that came to Japan to look for father?