[Machine Translation] One of the main attractions of a newly opened museum, a painting by Katsushika Hokusai, has been suspected of being a forgery. Yuuka Sekiguchi (Oyu), a former office worker leading a double life in Edo and the present day, decides to go to Edo to ask Hokusai directly about the authenticity of the painting to determine its authenticity. However, just as she begins her investigation, a middleman involved in the sale of the painting is found dead. Despite the suspicions of Denzaburo and his colleagues, Oyu pursues the case with the help of modern science and Hokusai's daughter, Aei.