"Surprise! It's been a while, Koji. Is Kaori here?" While his wife Kaori is visiting her parents' home with their child, her beautiful and busty friend Chitose comes for a surprise visit. When Koji tells her that he is not at home at the moment, Chitose's bright smile quickly fades. She slumps her shoulders in deep disappointment. Koji feels sorry for her dejected state and invites her into his house, saying, "Since we're here, why don't we come over for a cup of tea?" but...