Yuriko Kusama

The Kumakichi Ishida family lived happily in a small house in Shibuya while their mansion in Azabu was requisitioned by the occupation forces. When the residence is released to them, Mrs. Ishida wants to turn it into a Western style hotel to recoup their fortunes, but returns to Shibuya, swindled and sober.

During the end of the shogunate, there was a group of black-clothed masked samurai known as the "Crow Squad" who resisted the shogunate's oppression, taking down key figures one by one. During a Go game with a visitor named Seki Hikonoshin, the government inspector, Nozoe Minbu, was attacked and killed by what appeared to be the Crow Squad. The witness, Yoshi Goro, was also injured by their blade. Minbu's son, Katsuma, returning from a trip, learned of this and, along with his sister Sakura, vowed revenge.

When a young woman named Kanako goes to Lake Yamanaka with her close friends, she meets a young businessman, Saeki, who gives her an expensive pearl necklace to win her favor. As Kanako sets out to return the gift, she meets her father, who steals the necklace in order to repay his creditor.

During the era of the third Tokugawa shogun, Iemitsu, to strengthen the shogunate, many daimyo clans that did not align with the central power were dismantled. Among them, the ronin from the Higo Kato domain harbored a grudge against Yanagisawa Tajima-no-kami, who was at the forefront of these suppressions. Tajima-no-kami had two sons, Jubei and Matashiro. While Jubei was prudent and thoughtful, Matashiro was of a free-spirited nature. However, both were devoted to their father and were exceptionally skilled in the way of the sword.

On March 11 in the seventh year of Tenpo (1836), a monk named Bennō, who fell in love with a geisha named Oshima, was publicly exposed at Nihonbashi for committing an illicit act with a woman. While this was happening, an extravagant procession led by another monk named Nikkei passed over the bridge. Nikkei, the head of the Kanouin temple, in collusion with Nakano Harima-no-Kami, had schemed to make his younger sister, Miyoshi, the Shogun's mistress and aimed to transform Kanouin into the Shogun's family temple. To fund the renovations, Nikkei accepted bribes from a corrupt merchant named Koya Bunzo.