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.


Cast
* Takenouchi Yutaka as Hirokawa Eiki (Investigator at Rose Life Insurance)
* Matsushima Nanako as Egi Toko (Earth Sciences teacher at Eiwa Girls School)
* Uchida Yuki as Shono Tsukiko (Hirokawa Eiki's girlfriend & police officer)
* Kaneko Ken as Sakota Shogo (Egi Toko's college friend)
* Katase Nana as Sakota Nanami (Sakoto Shogo's younger sister)
* Matsuo Reiko as Ide Hitomi (Bartender at Ice Storm)
* Nakamura Toru as Ujou Takeshi (Chief Detective, Machida City Police)
* Nakajima Tomoko as Ujou Masako (Ujou Takeshi's wife)
* Kimura Tae as Ikenaga Sonoe (English teacher at Eiwa Girls School)
* Tayama Ryosei as Hirase Kazuhiko (Head of Investigation Department, Rose Life Insurance)
* Tanihara Shosuke as Hiyama Toyohiko (Photo journalist, Egi Toko's fiance #1)
* Yamaji Kazuhiro as Shibata Yoshinori (Psychiatrist, Egi Toko's fiance #2)
* Oikawa Mitsuhiro as Hisamatsu Koichi (Restaurant owner, Egi Toko's fiance #3)
* Tsukayama Masane