Manyu Scroll (2011)

Set in the Taiheimeji era under the Tokugawa shogunate, societal values are warped, with women's breasts dictating their status and success. Wealth and popularity are exclusively tied to this physical attribute, leaving those without it dehumanized. The Manyuu Clan, a powerful faction within the shogunate, is dedicated to cultivating desirable physiques. Chifusa, the clan's heir, rebels against this oppressive system by stealing a secret scroll that holds techniques for enhancing breast size. Her escape sparks a personal quest to challenge the injustices perpetuated by the clan and redefine what it means to be valued.