Takahiro Shimura

The devil king Lucifero suddenly declares he's going to retire, and must choose a successor. The Devil King Cadets gather one after another, and go to the human world to participate in the succession contest. But only the devil king's own descendant Osamu has no interest whatsoever in the contest. Compared to the fate of the world, Osamu is more interested in his part-time job at a convenience store. Osamu has no choice, however, but to start collecting familiars called "Child," which are born from human souls. Osamu still only has an interest in his part-time job, and he's a few steps behind the rest of the Cadets.

In the 14th year of the Genroku period, Asano, the head carpenter of Edo Castle, attacked Kira, the master of ceremonies, with a sword, leading to Asano's forced suicide and Kira's punishment being overlooked. Over a year later in Edo city, Shimohashi Hyogo, a carefree ronin and the nephew of Yagyu Yoshitaka, is ordered by his uncle to investigate the activities of the Ako Ronin, a group sympathetic to Asano's cause. However, Hyogo, who sympathizes with the Ronin's plight, helps out in times of need, rescuing Oishi Kuranosuke and Horibe Yahei from danger. He also teams up with Yaenosuke, a newspaper publisher, and Otaki, a geisha, to plan an attack on Kira's estate.

Genichiro Okugawa is appointed as the head of accounting in a feudal domain and travels with his servant Gonsuke to the country from Edo. Along the way, they are attacked by masked samurai on a mountain road. Genichiro is saved by Sukezaemon Tsuda, the supervisor of public works who was out hunting. Upon arriving in the domain, Genichiro is given a warm welcome by the vassals, who force him to drink heavily and find his subordinates to be rebellious. His proposed fiscal reforms are met with resistance, except by Tsuda who understands Genichiro's intentions. Genichiro marries Matsuo, the daughter of a senior councilor, but soon faces accusations of corruption.