Hankuro Yami Nikki Jo (Shogakukan Bunko Tsu 6-1 Showa Entertainment Sosho 3)

[Machine Translation] Fourteen years have passed since the Genroku raid. The Ako Ronin, who should no longer exist in the world, appear in Edo, and women who once served the Asano family are killed one after another. O-Kyo, a daughter of the Surugaya family, is kidnapped by a man claiming to be Oishi Kuranosuke and his party, and a threatening letter arrives demanding that she hand over the "Shogun's Dark Diary" in exchange for custody of her husband. However, no one could remember anything about the "Dark Diary. Furthermore, a group of "Ooatohime" (Princess Ooatohime), who came from "Ryugu" to look for Urashima Taro, also appear.... Hanchuro Mizuki, the Hatchobori assistant, stands up to solve the complicated mystery! What is the "Shogun's Dark Diary" that so many people are desperately searching for? This is the third installment of Jiro Kitagami's novels.

元禄の討ち入りから十四年。既に世にないはずの赤穂浪士が江戸に出没、かつて浅野家に仕えていた女たちが次々と殺される。その悪行を偶然目にした駿河屋の娘・お京がさらわれ、大石内蔵助を名乗る男とその一党から届いた脅迫状には、身柄と交換に『将監闇日記』を渡せという要求が。だが誰も、その『闇日記』なるしろものに覚えがなかった。さらに、浦島太郎を探しに「竜宮」からやってきたという"於兎姫"一行も現れて…。複雑に入り組んだ謎を解くべく、八丁堀同心・水木半九郎が立ち上がる!多くの者が必死に探す『将監闇日記』とは?北上次郎選第三弾。