Erza is sick that Mirajane wants always form couples in group of friends. So she challenges her. For one week, people chosen by Mirajane have to meet for a truth or dare at the same time. And, of course, Mirajane will ask the questions . If at the end of the week all couples will be formed, then she will be able to meddle in the love life of others. If not, she won't be able to meddle in the love life of others