In the dawn of the Meiji period, the Gokumonjou, an inescapable prison, has been established in the middle of an enormous lake to counter the soaring crime rates the new era has brought. Serving as the ferrymen are the famous Kumou brothers: the eccentric family head, Tenka; the reckless but noble second son, Soramaru; and the guileless youngest, Chuutarou. In spite of their grim work, the three lead relatively peaceful lives in the ever-cloudy town of Oumi, together with their housekeeper, Shirasu Kinjou. But buried in the long history of Oumi is the legend of the terrifying Orochi, a serpentine beast that awakens every three hundred years in a human vessel. Unbeknownst to Soramaru and Chuutarou, the actual job of the Kumou family is to seal the Orochi away before it fully revives—or the world will be plunged into destruction. Amid the monster's next resurrection, the Kumou family must find the resolve to keep laughing under the clouds. [Written by MAL Rewrite] Included one-shot: Volume 1: Utakata ni Warau (2 parts)

Set 300 years after Utakata ni Warau, and 300 years before Donten ni Warau, during the turbulent Sengoku period, it is the story of a young man named Ishida Sakichi, whose mission leads him to encounter a pair of mysterious twins at the Kumo Shrine.