Yui is a 19-year-old man, a first-year student in the university's Literature department. He has no relatives so he has to go to school and earn money. And he earns a steady amount of money writing novels.

Because it was convenient, Yui rented an apartment near the school that looked quite spacious, airy and clean for quite a cheap amount. And there's one thing that Yui doesn't know: this apartment is haunted.

Today is the day Yui moves into the apartment. While Yui was cleaning the house, the lights suddenly turned off, the air around him seemed much colder, along with small noises that made Yui shiver.

At this moment, Yui realized that this house had a problem. He trembled. He was very scared but still remained calm. His voice trembled. "What's going on?"