A young man struggling to repay his scholarship was involved in the wrongdoing of the Oreore fraud group. Ginjiro Manda, a moneylender in the Minami district of Osaka, or "the demon of the Minami district" as he is called, will not tolerate a story that does not make sense.
Kamaitachi no Kijyou no Kuuronjyou is a Japanese variety show that experiments on theories to confirm whether it is true or not. After the experiment, it will be judged whether or not it is a real theory or a false theory. If the experiment succeeds, then it is no doubt a real theory.
The program introduces the history of passageways, trails, or trade routes in various parts of Japan. It delves into the feelings of the predecessors hidden within those roads, the traditions that have been continuously preserved, the craftsmanship that have been passed down, and stories they want to convey to future generations.
Akizuki Rokurōta was born as a child of Tokugawa Ieyasu, but since he is a twin with Tokugawa Iemitsu he is not allowed an official place within the Tokugawa family. Sent away as an adopted son, he continues his wandering journey. One day, he accidentally encounters Toyotomi Hideyori's son Toyotomi Hideya, his mother Katsura-no-miya Renko and their maidservant Sasaka, survivors of the Shogunate attack on Osaka Castle years before who are now fleeing from their refuge in Kyoto. The Tokugawa Shogunate and Yagyū clan are trying to capture or kill them, while on the other hand villains want to use them. Akizuki Rokurōta decides to protect them from both sides.
Shirakawa Keita works as a building inspector. He is a single father, who has raised his 14 year-old-daughter Hitomi alone since his divorce with ex-wife Sendai Yukiko. Yukiko works as a corporate lawyer for a large construction company. After his ex-wife left, Keita placed his daughter as a priority, making him the ideal father. One day, Keita receives a phone call. The caller informs him that "I have your daughter. If you want to save her life, go to your ex-wife." While looking for his daughter, Keita uncovers secrets about his daughter and ex-wife.