All 10 episodes The play is adapted from a comic of the same name. It tells the story of Oda's mother's accidental death when she was a child. She lives with her father, who runs a few comprehensive trading company in Japan. However, shortly after her father entrusts the old key called "The Key of the Devil" to Toōa, she is killed by a mysterious person in front of her.In order to explore the secret of the "Devil's Key" related to the truth of his father's death, Zhao Chao wandered around the world. However, he returned to Japan after a series of mysterious property transfer incidents.Then, the character aiming at the "Devil's Key" appears in front of Zhao Chao, and he must challenge the "Devil's Game"...