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Ane x Sensei x Imouto
姉×先生×妹
Two sisters find themselves in a rivalry for the attention of their home tutor. Each one tries to outdo the other, using different tactics to earn special rewards from him. The tutor, caught between the siblings, becomes the center of their escalating competition.
As their methods grow bolder, the sisters push the boundaries of their relationship with each other and with their tutor. The stakes rise as both girls become more determined to win, leading to a series of intimate encounters that test their bond.