Эп. 12: Дзин получает посох Наги и узнаёт, что она солгала ему, прежде чем исчезнуть.

12

Daitetsu finds that Nagi left her staff behind and gives it to Jin. After Jin arrives at home, he finds that Nagi is nowhere to be found and discovers a written message from her claiming that she lied to him all along and asking his forgiveness. He keeps looking for her without success and when Tsugumi inquires him about the reason for Nagi not coming to the school anymore, he replies saying that maybe they will never see her again. (Source: Wikipedia)