Adapted from Nishimura Kyotaro won the thirty-fourth ( 1981) Japanese Writers Association Award for the work of the same name. In Ueno station near the toilet, found " economics and trade " the young officer Yasuda Aki (Shinoda Hikaruryo decorated ) assassination remains. In addition to the suitcase the victims were found at the scene, a twenty-one fifteen Ueno to Aomori " sleeper express dawn " was found inside pocket still remains, not to feel surprised. In fact, at the moment, because going to relatives of the ritual, Tsumako Naoko (Asano Yuuko decorated ) now also should be in the same column " sleeper express dawn ". Soon learn, killed Yasuda in order to Aomori students Kataoka Kiyoshino ( a smart decoration) wedding, 6 friends plan and baseball with the Ministry of home. Since we are friends, may know what happened. After a " 5 sleeper express dawn ", ten Jin Chuan also went to aomori.
Kataoka wedding invitation, in addition to have the death of Yasuda, and the travel agency staff Miyamoto Xiao ( Ishigaki Yuma ornaments ), free occupation of Machida Takashio (Huanggawa Damasashiya decoration ), logistic company work Kawashima Shiro (Tsuchiya Yuichi decorated ) these baseball department 's friend and manager at the time of the 2 people -- in the department store work dispatcher ( Hashiguchi Mayumi Ono Mayumi decoration ), nurse Murakami Youko (Mitsuya Youko decorated ) so that some people attend. However, in the middle of Kawashima but do not know which station under the car, from the " dawn " car suddenly disappeared. Heard that Yasuda had been killed, 4 people are very shocked. Hardest hit was 2 years ago and Yasuda dated yoko.