The heroine, Komori Yui, has always been an ordinary high school student - excluding the fact that as a child, strange, supernatural things happened to her. However, she has always been able to maintain a positive outlook on life.  In her second year of high school, Yui's father, a priest, moves somewhere else due to work. Yui is forced by these events to move to a new town and night school for the wealthy and famous. Furthermore, the house she must stay in is called "the haunted house" by everyone else, and Yui is suddenly living with six brothers who aren't exactly human...