Synopsis
Kotone Takashina, Mami Yuzuki, and Yuuri Kanou are three high school girls who belong to their school's Mystery Club, always searching for eerie happenings in the area. After coming across an abandoned site in the forest near their town online, Kotone decides to investigate and brings her friends along. However, an unexpected downpour catches the trio off guard, and instead of the ruins they had anticipated, they stumble upon a European-style mansion. Its inhabitants turn out to be a mysterious young man named Shuuya Houjou and his young twin sisters. He offers the girls shelter until the rain lets up, but they soon uncover the terrible secret concealed within the mansion's walls...
