Jutai High School, which is 3 days away from the graduation ceremony. The popular English teacher among the students, Mizuguchi Risako (played by Karen Takazawa), is kidnapped, and Ryoki Kurokawa (played by Yuki Inoue) receives a challenge letter from an unknown sender. "To unravel the mystery of kidnapping, only you know the truth." Received the same challenge book
Jutai High School, which is 3 days away from the graduation ceremony. The popular English teacher among the students, Mizuguchi Risako (played by Karen Takazawa), is kidnapped, and Ryoki Kurokawa (played by Yuki Inoue) receives a challenge letter from an unknown sender. "To unravel the mystery of kidnapping, only you know the truth." Received the same challenge book