Can a murder mystery be solved when the seventh day is over for Nagomu? Is it possible for him to prevent the perpetrator from exacting complete revenge? This is an adventure game that is modeled after a traditional detective story book. Ichiyanagi Nagomu, a university student, is forced to abandon his automobile and walk through the woods to the nearest mansion to appeal for assistance after running out of gas and getting lost in the mountains during a stormy night. He has no choice but to do so.
On the other hand, a surprise is in store for him in the gloom of that night. In the wet garden of the estate, he discovers the body of a middle-aged guy who had been lying there for some time. Someone creeps up behind him and assaults him before he can recover from the shock he has experienced.
