Yumemiru Otome 2

Mizuki shows herself as a resolute student body president even to the sexually harassing teacher Tanabe. Mizuki sees Aika off to an extracurricular service activity, but she is still embarrassed by her doting younger sister's uncharacteristic comments.... Mizuki is summoned by Tanabe, who shows her a lewd video of her sister, and in exchange for a promise to destroy the video, she accepts the man's demands. Mizuki's consciousness begins to melt away as she experiences her first taste of pleasure...?