DVD release of "Kokucho no Himitsu" starring Toshiyuki Someya. Transferred to Tokyo by his company from the country side, Toyama steps into a real estate agency where he meets Okazaki--a worker his own age. Introduced--or perhaps forced--into Okazaki's apartment, he meets a married couple, Ryoji and Yoko who is the landlord and a beautiful girl, Mio who looked somewhat lonely. One day, he sees Mio and Okazaki having a quarrel which gives Toyama a strange feeling about the apartment. The next day, Toyama was told by Okazaki to leave the apartment, only to find the dead body of Okazaki soon after.