Muromachi Period. A boy lived at Dannoura, where the remains and wreckage of the defeated Heike clan still lie in the sea. His name was Ionotomona. One day, Tomoo and his father were begged by a group of people from the capital to row out to sea in search of a sword, one of the ""three sacred weapons"" that were said to have fallen into the sea with the Heike, proof of their imperial throne. However, Tomoo's father is killed by the curse on the sword, and Tomoo loses the sight in both eyes. As if pushed by the ghost of his father and his mother, who cries out in regret, Tomoo heads for the capital alone. On his way there, he meets the biwa master Taniichi, who becomes his apprentice. Upon arriving in the capital, Tomooichi was welcomed into the Kakuichi clan, to which Taniichi belonged, and given the name ""Tomoichi"" (友一). However, he wonders whether he should accept his new name and join the Kakuichi clan, so he once again prepares for a journey and wanders alone in the capital at night. In the capital, there is another boy. His father is the head of the Hieiza, a branch of the Sarugaku Noh theater. The boy had grown up outdoors like a dog, but he had inherited the talent of a Noh performer. He learned Noh by watching and learning, and used his peculiar physique to dance differently from others. Wearing a gourd mask, he ran along the streets of Tokyo as if he enjoyed the fact that his deformity attracted people's attention. Then, the two boys meet. The one who plays music and the one who dances. They instantly hit it off. The boy who dances Noh later calls himself ""Inu-Oh. From there, a new story begins. While each pursues his own artistic path, their performance of a new and unconventional form of Noh thrills the people of the capital. Tomoichi, who changed his name to Tomoari, overwhelmed the audience with his one-of-a-kind free-spirited performance style and singing voice that could be called a cry from the soul. Inuoh captivated people with his unconventional performances and unrivaled physical expression, and as he reached unprecedented heights as an artist, his body, bound by a curse, gradually changed. His popularity soon swelled to the point of antagonizing the conservative Noh players and biwa players, and eventually reached the ears of the imperial court. Finally, Inuoh and Tomoyuri were to perform their art in front of the shogun, Ashikaga Yoshimitsu. For the two, this is the stage of a lifetime, the pinnacle of their career, and the moment they encounter the truth they have been searching for.