If he blackmails her with this video, he might be able to do whatever he wants with Makiko... While staying at his friend Tsurukawa's house, Kitamoto accidentally encounters Tsurukawa's mother, Makiko, masturbating. He manages to secretly film the scene with his smartphone. He feels uncomfortable blackmailing his friend's mother, but this is the only way to get the beautiful Makiko. With determination, Kitamoto visits Makiko's bedroom and shows her the video. However, Makiko's reaction is unexpected...