In a world in which having large breasts means everything, the successor of the powerful Manyuu family, Chifusa Manyuu, defects and steals the Manyuu Scroll of Secrets, but is wounded during her escape.
After an encounter with some guards, Chifusa ends up absorbing several pairs of breasts, which make her own breasts enormous and massively heavy, limiting her mobility.
Chifusa and Kaede run into Lord Hatomune Mie, who has escaped from his palace and disguised himself as a commoner to live a simple life in a village, where he has become a popular citizen.
While traveling through the forest, Kaede and Chifusa save a painter called Sakuji Itamune from a trio of Manyuu guards who wanted to kill him because of the content of his art.
