Phantom Seer, Vol. 1

Iori Katanagi is a shaman who’s not very enthusiastic about his job. One day he receives an order from his sister that he can’t refuse—investigate the phantoms that are haunting his classmate Riku Aibetsu. However, the case doesn’t turn out to be so simple when Iori discovers a connection between himself and Riku’s strange power of attracting phantoms.