Private Detective Dobu

Osaka Castle was erected as a result of Hideyoshi Hashiba's (portrayed by Shindo Eitaro) solicitation from Kyogoku Tatsuko to become his consort. During more than 30 years, until the devastation of the castle caused by the Summer Siege of Osaka, a series of tragedies unfold, affecting various women who found themselves at the mercy of fate..

Villain or hero, Taira no Kiyomori changed Japanese history forever 900 years ago. Without ever knowing his real father, Kiyomori was raised as a samurai. Together with his stepfather, he wiped out piracy along Japan's western coast, becoming a full-fledged warrior samurai. In an age when samurai were looked down on as members of the lower class, Kiyomori was skillful at winning the hearts and minds of the people. By rounding up surrendered pirates and achieving other successes, Kiyomori eventually became the de facto ruler of Japan.

It is the Edo period during the ninth Shogun Ieshige's reign. Orin's father was falsely accused of attempting to assassinate the former Shogun Yoshimune and in accordance with her father's wishes, Orin joins the secret assassination group Tegusari-nin, headed by Uemura Doestsu. In the organization, Orin fights through many dangers. But one day, she realizes she is being used by Doetsu in order to advance his ambition.

Sakazaki Iwane is a ronin who spends idle days in Edo. Until a few months ago, he was a promising son and successor to a powerful family in Bungo. He has came back to Edo, where he lived for a while for swordplay training with his two best friends, after a tragedy in the three's home domain—both of the two friends died, one of them killed by Iwane by command of the domain lord's chief retainer. Iwane left his home for Edo, leaving behind his fiancée, a sister of the friend he killed. Eventually, Iwane detects the conspiracy behind the deaths of the two friends and struggles to reform his domain.

Naotora Ii is a woman given a male name, who succeeded as the head of the Ii family during the Warring States period when her father passed away. With her wisdom, courage and affection for loved ones, Naotora lived through turbulent times and paved the way for the future of her clan.