A shikakenin was an under-the-cover trade that undertook killing in Edo. Hanemon of Otowa, an agency that introduced laborers and maids, was also one of these. Katsugoro Iseya was a timber dealer who had come in as a client. His target was the constructions magistrate Hanno, and the Tatsumiya who sipped on the benefits. Hanemon who had a stong code towards killing, where he would only kill those who do no good to be in the world, accepts this request. Baian Fujieda, a needle doctor would carry out the killing. However, the professional killer Baian fails to bring down Tatsumiya. Hanemon then looks to another shikakenin, the ronin Sanai Nishimura for the role. Although Sanai's ability with the sword is good, he lives poorly in a tenement, and accepts this commission on the condition that it is kept a secret from his wife and child. Here, they close in on Hanno and Tatsumiya again...

Towards the end of the Edo era, in the town of Kyoto, there lived a wealthy merchant by the name of Imai Tadamasa. He was blessed with 3 children, Hatsu, Asa and Kyutaro. His eldest, Hatsu, was a traditional girl who loved to play the koto and sew. Whilst his second daughter, Asa, was an impish hoyden who loved sumo wrestling. Asa was engaged to be married to the second son of a distinguished family who ran a money changer business in Osaka, Shirooka Shinjiro. Although Asa was furious when she had first heard about the betrothal, when she met up with Shinjiro for the first time, his charisma greatly attracted her and she fell in love with him in no time.