Amagoushi no Yakata

Can Nagomu solve a murder case by the end of the seventh day? Can he stop the culprit from taking full revenge?
This is an adventure game based on a classical mystery novel. Running out of petrol and lost in the mountains on a stormy night, Ichiyanagi Nagomu, a university student has no choice but to leave his car and ask for help from the nearest mansion within the woods. However, a shock is waiting for him in that dark night. He finds the corpse of a middle age man lying in the rain at the backyard of the mansion. Without any time to recover from his shock, somebody sneaks up behind him and attacks him.