Danmara Arc

Spanning volumes 15 to 19 and chapters 129 to 165, this ninth arc wraps up the Kintama Hunt Saga and carries the alternate title Cursed Trunk Arc. It sits between the Onbusuman Arc and the Kozuka Knives Arc. Okarun's missing second kintama proves to be in the hands of Unji Zuma, a haunted young man who means to use its power against a cursed diorama known as Danmara. Once Momo is accidentally drawn inside, she joins forces with Unji to clear the game while Okarun pleads with Turbo Granny, Rin, and the guardian spirit Mai to stage a rescue. The arc finally settles the drawn-out hunt for Okarun's testicles and lays bare Unji's painful history.

After tracing the claimed kintama to a police box, Momo and Okarun confirm it has been taken and turn to Turbo Granny, whose lack of tech savvy stalls the search of the records. They recruit Rokuro Serpo instead, an exile from his own kind now clerking at a convenience store, and his nanoskin lets them hack the files to name the holder: Renjaku High's Unji Zuma. Classmates describe him as absent and possessed, bragging that a golden ball will let him wreck the world. Hunting through his neighborhood, the duo meets a fleeing old man, a delinquent gang, and a peculiar diorama at the gang's hideout, where Unji is said to be trapped. As they try to force the old man inside, Momo slips, brushes the diorama, and is swept into its inner world.

Within Danmara, a yokai-powered stranger saves Momo from a giant knight, the Carmine, and reveals himself as Unji. Realizing the place is a game, the pair climbs through its stages, downing the chef Nom Nom Bongo and the rocky Rock-Hard Costinus, gathering cards that grant each boss's ability and learning four bosses must fall to fill the card. Back outside, a bribed Turbo Granny and a helping Rin head for the diorama. At the last stage the two smash a crystal inside a castle, just as Okarun and Turbo Granny arrive too late to reveal the truth: the diorama is a cursed trunk caging a yokai, and the crystals were its seals.

Loosed, the Fairy-Tale Card, embodiment of the world's evil, had dressed the trunk as a board game to dupe people into breaking its seals. It seizes Unji and warps him into the rampaging Umbrella Boy, drawing out his full power while wrecking his body. Momo is left badly hurt, but Rokuro and Bega reach Danmara and help Okarun take back his kintama and resume his Turbo Granny form. A sweeping flashback exposes Unji's past: a father lost to overwork, a brother drowned, a mother's suicide, a slide into crime, and his eventual adoption by the officer Bega, whose wife and daughter were themselves murdered. Futa's spirit had become the Umbrella Boy, surfacing to rescue Bega and a drowning child.

Moved by these visions, Momo wakes weeping. Okarun, Rokuro, and Bega bring Umbrella Boy Unji down, and Mai fuses into an idol costume so Rin's gravity powers can lift the figurines from the trunk. Having eaten Danmara's food, Momo cannot rise, so Turbo Granny stays at her side. Okarun confesses his love before parting, and Momo makes him vow to defeat the yokai and confess anew once she is free. In the real world Saint-Germain appears with the cursed sword Asura, battles the regenerating Fairy-Tale Card, and times a joint strike with Okarun, Rokuro, and Unji that wipes out all its cards. Turbo Granny ferries Momo out, but she emerges shrunk to a tiny size, while Saint-Germain stabs the beaten yokai to seize its power and announces his hunt for every supernatural secret, Dandadan included.

The arc debuts Unji Zuma, his guardian Bega, the delinquent Raiya Kazama, the age-cursed Daiki Hakono, and the Fairy-Tale Card, whose stolen power later reaches an agent in the Kozuka Knives Arc. Rokuro masters the nanoskin and joins the fray, and Rin's idol form yields gravity control that swells with the crowd's cheers. Okarun's confession is accepted on the promise of a second, but Momo's shrinking pushes that off and launches the Ultimate Yokai Saga's search for a cure. The Asura, which channels collected yokai abilities, grows central going forward, and Saint-Germain's theft feeds the Orchestrator's schemes. The cursed trunk passes to the collector Payase, and the closing baseball ritual lands when Seiko bats the kintama, ending the long effort to reattach Okarun's balls. Her powers restored, Turbo Granny departs the Family yet turns to the spirit Abura to help lift Momo's curse.