Investigations on a mysterious woman Toko started when Sonoe, a teacher and Toko's fellow faculty member, was found dead as a result of what seemed to be an unfortunate accident. Eiki, an insurance investigator, and Takeshi, an ambitious police detective, find links between this case and the deaths of Toko's 3 fiances, and are determined to uncover the truth.

• Yutaka Takenouchi
• Nanako Matsushima
• Yuki Uchida
• Ken Kaneko
• Nana Katase
• Reiko Matsuo
• Toru Nakamura
• Tomoko Nakajima