Episode :
Saki and her older brother Keisuke have been independent since childhood, relying on one another due to their father’s frequent absences. This situation fostered a profound connection between them. One night, when Keisuke misplaced the talisman given to him by their father, his sister unexpectedly reveals a terrifying aspect of herself as a succubus—her uncontrollable desire for him overwhelms her, leading her to act on her feelings that very night. The following day at school, when his classmate Riri Manabe assaults him, Keisuke begins to sense that something is amiss since the talisman is gone. Unbeknownst to him, he possesses an above-average level of mana, which draws the attention of numerous succubi. Only the talisman from his father had the power to suppress this attraction. Now that it is lost, he finds himself utterly defenseless against the desires of both Saki and Riri.
