Ep. 1: Chifusa Manyu flees with stolen secrets after a violent confrontation with her sister Kagefusa.

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Chifusa Manyu, heir to the influential Manyu family, abandons her home and steals the Manyu Scroll of Secrets, which holds all breast enlargement techniques, sustaining injuries during her escape. She is discovered by a woman recently assaulted by Kagefusa, a Manyu assassin and Chifusa's sister, whose attack reduced the woman's breasts and ruined her social standing. Enraged by Chifusa's appearance, the woman tries to cut off Chifusa's breasts but is pacified. Before Chifusa can depart, she encounters Kagefusa, who has captured and mutilated Chifusa's companion, Kaede. Chifusa defeats Kagefusa using a unique technique that transfers Kagefusa's breasts to herself, forcing her sister to flee. Following this event, Kaede chooses to accompany Chifusa on her journey.