Yuri, a shy and introverted girl who is afraid of strangers, has harbored feelings for her older brother that go beyond sibling love since she was young. Unable to confide in anyone about these feelings, even now that her breasts have grown larger, she spends her days in her room indulging in fantasies to comfort herself and calm the heat in her body. But one day, Yuri finally reaches her limit and can no longer control her actions… The feelings of the girl hidden behind her glasses are about to be unleashed...
