In Nanami’s class, a third-year high school student, there is a guy named Yatamori who gives off a sanctuary-like aura that keeps people away. One day, Nanami accidentally picks up the notebook he is always writing in and finds out that it contents of a story and his true self. Shocked, Nanami visits Yatamori's house to return the book, but there she finds Yatamori in the arms of a man who is far from the image of a sanctuary... He can't get this out of his head and is troubled when Yatamori asks him to pretend to be his boyfriend so that he could leave the guy who was obsessed with him.