However, when they find the tome, Miyoko attacks at Gian to get the tome, and removes her disguise and shows herself as Medusa, a demoness under control of the Demon King. She cannot reach the tome under protection of the anti-demon power source, so she has takes advantage of Doraemon's group to help her take the secret paper.
When they find the tome, Miyoko attacks Gian to get it and reveals herself as Medusa, a demon under the Demon King's control. She is unable to reach the tome due to protection from an anti-demon power source, so she uses Doraemon's group to help her obtain the secret paper.