Eguchi Yosuke as Suzuki Seiji
A professor from New Boston University. His clinical trials for a breakthrough treatment method for suicide has been a success. He is wheelchair-bound because of a physical disability of his legs.
Uchino Masaaki as Yuda Kazumichi
The Chief Cabinet Secretary of the present government and Suzuki Seiji’s university schoolmate. Appointed to the position at the age of 42, he is the youngest Chief Cabinet Secretary in the country’s history. He takes tranquilisers because of the many worries he has in his professional duties.
Kamikawa Takaya as Kanbayashi Yosuke
A detective with the Tokyo Metropolitan Police’s First Investigative Division who confronts cases with a cool head. He comes face to face with his ex-wife’s dead body at a place he heads to for an investigation.
Yamamoto Koji as Tachikawa Haruo
A journalist with Maichou Shimbun. While he interviews Suzuki Seiji on one hand, he also interviews Yuda Kazumichi on the other, and realises the relationship between the two men.
Ozawa Yukiyoshi as Kaburagi Kota
A lieutentant commander of Maritime Self Defence Force who worries about Japan’s present situation. He carries out work behind the scenes at Yuda Sakunosuke’s instructions.
Itaya Yuka as Kawamura Shoko
A flight stewardess who gave in to self-despair after she was sacked from her job. She gets into a relationship with Kanbayashi Yosuke through a strange turn of events.
Fukuda Mayuko as Yuki Kae
A homeless young girl who meets Matsunaga Shoichiro on the street by some coincidence. She left her home in Hokkaido to come to Tokyo.
Wakamura Mayumi as Yuda Eriko
Suzuki Seiji’s ex-wife who had taken their son with her when she remarried Yuda Kazumichi. A university schoolmate of Suzuki as well as Yuda. She discusses her husband’s worries with Suzuki.
Hira Mikijiro as Yuda Sakunosuke
Yuda Kazumichi’s father. The former chairman of the Japan Federation of Economic Organisations (Keidanren). He has tremendous clout in the country’s political circles and advocates the importance of a remilitarised Japan to his son.
Izumiya Shigeru as Matsunaga Shoichiro
A political criminal who has been released after spending 15 years in prison for bombing the building of a large corporation.