Daisuke discovers the data on Adollium in the lab while Kato finds an underground train leading to Daisuke’s mansion. Daisuke hands the data to Suzue before confronting his father, whose real identity is his grandmother’s butler, Hattori, who disguised himself as Shigemaru to deceive Daisuke. Daisuke encounters his grandmother, Kikuko, who admits she wanted to keep Adollium as a family secret so they could profit from it. Daisuke’s mother, Sayuri, wanted to broadcast Adollium's existence to the public, so Kikuko had Hattori assassinate her and, for years, has kept Shigemaru prisoner...