In the turbulent last days of the Edo period, Kawai Tsugunosuke, a Japanese samurai serving the Makino clan of Nagaoka, dreamt of independence from the restraints of vassalship. Despite his progressive views and his desire for his estate to remain neutral during the Boshin Civil War, he was bound by loyalty and duty to the clan and was compelled to choose sides.
In 1934 (Showa 9), Maj. Gen. Yamamoto Isoroku was ordered to be the chief representative of the preliminary negotiations for the Disarmament Conference to be held in London. If negotiations break down and Japan becomes isolated from the international community, the gap with Britain and the United States will deepen, and it may eventually become a war. Knowing the mighty national power of the United States and thinking that war should be avoided, Yamamoto is forced to make a tough decision with the speculation of senior military personnel who want to withdraw from the disarmament system and hope for a path to arms race. Under such circumstances, Yamamoto comes up with a secret plan!
Hayami Teruya is a dedicated salaryman who does a workman like job as the chief editor for a magazine. He has personal charm, get along with both the publisher and subordinates and runs the ship well. Chatting with his direct boss he picks up a certain vibe. Did he misunderstand that the magazine is doomed and will be terminated? If so, he is not going down without a fight. He will fight to make it through and keep his, and the others', jobs.
The drama depicts the conflicts of elite police officers torn between career aspirations and justice.
"Ouroboros" is an ancient symbol that depicts a snake eating its own tail - meaning infinity. Based on a popular comic, a clumsy detective and a cool gang stand up to true evil. Ikuo and Tatsuya grew up in a children's orphanage together. When their favorite teacher, Yuiko, is murdered, a policeman wearing a gold watch covers up the incident. Ikuo and Tatsuya promise each other to avenge their teacher someday. Twenty years later, Ikuo is a detective in Shinjuku second police station investigating various cases with elite detective - Mizuki, while smart and handsome Tatsuya has become one of the top members of a gang group.