In the Taiheimeji era, the Tokugawa shogunate values breasts highly, equating them with wealth and status. The Manyu Clan, government allies, know secret techniques for breast enhancement, detailed in a scroll. Chifusa, the clan's heir, flees with this scroll, rebelling against the oppressive norms set by her clan.


Kaede performs the Chichi-togi (Breast Polishing) cleansing on Chifusa's breasts to keep them from sagging after they become increasingly large due to her defeating Manyuu Assassins. However, on this occasion, Kaede tries a new form of…

Kaede and Chifusa try different techniques from the Manyuu Secret Scroll to try and enlarge Kaede's breasts. After several failed techniques, Kaede stumbles upon one she likes, which involves sucking milk out of a larger breasted woman's…

Kagefusa forces Ouka to perform the Chichi-togi on her breasts and recurringly teases her with her bosom. When Kagefusa begins to lactate due to Ouka stimulating her nipples, she tries to spray her milk on Ouka telling her it will enlarge…

After recovering her breasts, Ouka goes to a hot spring to relax and play with her newly found bosom. However, she gets caught by Kagefusa and Kaede, who blackmail her into capturing Chifusa and hold her in place so that Kaede and…

While Chifusa sleeps at an inn, Kaede decides to measure her breasts but gets carried away and begins to play bondage with her sleeping friend. When Chifusa awakens, she finds herself trapped at her breast-crazed friend's mercy, who…

After Chifusa's breasts expand too much, Chifusa's clothes stop fitting her and in order to make new ones, Kaede has to make a plaster model of her friend's breasts.

Kaede narrates through her journal a whole day of activity during her and Chifusa's travels; which includes descriptions of how they fled from Manyuu Assassins through a forest, by swimming across a lake and finally confronting them and…

Thinking that Kaede is out shopping at the market, Chifusa takes a bath in a steam room and performs a Chichi-togi on herself. However, a very pleased Kaede arrives and spies on Chifusa's alone time.


In a world in which having large breasts means everything, the successor of the powerful Manyu family, Chifusa Manyu, defects and steals the Manyu Scroll of Secrets (which contains all the Manyu secret techniques for breast enlargement),…

Running low on money, Chifusa and Kaede earn some money by utilising Chifusa's assets. They go to an inn run by a well-endowed landlady. However, this landlady turns out to be a Manyu assassin who drugs both Chifusa and Kaede and then…

Having not eaten for days, Chifusa and Kaede get a job at a maid bar, but soon get fired due to Chifusa's short temper around the rowdy customers. Collapsing due to hunger, they are rescued by a man whose daughter was stricken by a…

With Chifusa and Kaede coming up short on a food bill, they are forced to become divers by the restaurant's owner, Oiso. As Oiso laments how her large breasts keep her from diving properly, her assistant, Mizuki, is attacked by a large…

Chifusa and Kaede save a woman called Osuzu from four "monsters" that assaulted her and tried to molest her breasts. At Osuzu's village, both heroines meet a man named Yasuke, who lost his massively-breasted wife two years prior and…

After an encounter with some guards, Chifusa ends up absorbing several pairs of breasts, which make her own tits enormous and massively heavy, limiting her mobility. She and Kaede travel to a temple where a nun named Jifuni theorises that…

Chifusa and Kaede stop at a village so Chifusa can get a massage to ease the pain caused by her heavy tits. The masseus, a girl named Momoha, tells them of "The Boobie Kid" a local thief that steal's rich women's tits and allegedly gives…

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. After receiving a tour of the town from Mie,…

While traveling through the forest, Kaede and Chifusa save a painter called Sakuji Itamune from a trio of Manyu guards who wanted to kill him because of the content of his art. When Sakuji sees Kaede, he immediately asks her to model for…

Chifusa and Kaede rest for the night in an abandoned shack after Chifusa comes down with a fever. While they are resting, Kaede mentions that Chifusa had only come down with a fever like that eight years prior (in an incident she does not…

Chifusa and Kaede arrive to the Munemori village, hometown to Chifusa's mother, which is now in ruin. There they reunite with Chifusa's grandmother and Chifusa's aunt, Tsuhuya Munemori, and her baby daughter, Hazuki. Tsuhuya agrees to…

Muneyuki and Ouka lead a batallion of four Manyu assassins to capture Chifusa and Kaede. The two, along with Tsuhuya Munemori, face off agaisnt the assassins, defeating one of them before being outmatched. However, they are saved by the…
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