Iryu Sousa SP 7

Kajita Masahiko, CEO of Kajita Heavy Industries, appoints his two sons, Hajime and Osamu, at the head of his company for six months, to test their manager's ability and then decide who would be the next CEO. On the decision day, Masahiko is found dead in his villa in the mountains of Kyoto by two of his employees. Could one of his son be the culprit? Or could it be Makimura Momoko, Masahiko's financial consultant? And who was in the detached building close to the villa when the murder occured?