Following Inu no Taishou's death, his swords Tenseiga and Tessaiga were passed on to his sons, Sesshoumaru and Inuyasha respectively. However, there exists one more blade. During a visit to his friend Kagome Higurashi in modern times, Inuyasha encounters Sounga—his father's third sword. Found by one of Kagome's ancestors inside the old well that connects the past to the future, Sounga has been kept for years as a treasured artifact at the Higurashi shrine. Nevertheless, it soon reveals itself to harbor an evil spirit with a terrible urge to kill. While struggling to subdue its calamitous nature, Inuyasha manages to bring Sounga back to the feudal era where he must confront his brother Sesshoumaru, who has always desired to possess it. But when they lose track of the sword during their fight, the siblings engage in a fervent competition to find it, still unaware of its secret and the legacy that Inu no Taishou has left for them.

Kyoto has been populated by groups of tanuki and tengu for years, living alongside humans who are oblivious to the existence of these creatures. Yasaburou Shimogamo is the third son of an influential tanuki family who spends his carefree days taking care of an old tengu, observing humans through his ability to shapeshift, and dealing with the mysterious woman named Benten. Behind the peace and tranquility, however, is a painful memory from long ago as Yasaburou's father, head of the tanuki community, was killed and eaten by a group of humans known as the Friday Fellows. Uchouten Kazoku follows the trials and tribulations of the Shimogamo brothers as they struggle to avoid their own grisly demise while coming ever closer to unraveling the truth behind their father's death.

Taking a break from the hustle and bustle of Tokyo, Souta Tawara returns to his hometown in Kagawa. Though his parents are no longer around, his former home and family-owned udon restaurant reminds him of the times his family was still together. Reminiscing about his childhood, Souta enters the udon restaurant and discovers a grimy young boy sleeping. At first, Souta thinks nothing of the chance encounter and provides the boy with food and clothing. However, to his surprise, the boy suddenly sprouts a furry pair of ears and a tail! Souta soon learns that the nameless boy is actually the rumored shapeshifting tanuki that has been inhabiting Kagawa for many years. Thinking that the boy has been living a lonely life, he decides to take him in and name him Poko. Udon no Kuni no Kiniro Kemari follows the heartwarming relationship between Souta and Poko, and through the time they spend together, Souta recalls his own past, the place he left behind for the city, and the relationship he had with his father.

To the casual eye, the amnesiac bounty hunter Wu Liuqi looks quite intimidating. With his deadly telekinetic scissor techniques and his ability to seamlessly transform into anything, one would not expect his modest demeanor. In fact, Wu is quite terrible at his job. Often times the freelancer can be found botching an assassination or targeting the wrong person. While his failures could be due to his subpar skills, it usually boils down to him being a normal kid, with a heart unsuited for his line of work. Accompanied by his feathered friend Dai Bo, Wu is on a simple quest to regain his memories. Although his inconspicuous day job as a hairdresser and his after-hours occupation are simply a means for him to repay debt, his various ventures seem to intertwine with his pursuit to recover his lost past.