Takehaya Masato is a high school student with good looks, excellent grades and outstanding skill in sports. However, despite all these amazing traits, he lost his social life because of an incident he did not wish to happen. Because of this and his introvert personality, he had difficulty fixing his tarnished reputation.

At the day of their school's opening, gossips of a ghost sighting at the back of the school campus began to spread among students. Masato decided to investigate the matter, out of curiosity. On the way, he stumbled upon the president of the school's student body, Reina Fleurblanc, going to the same place. What mysteries will they discover, and how will this change Masato's everyday life?