[Runa] Black Gal Insert (COMIC Shingeki 2017-10) [Kuraudo]

Student council president Ootori Reika storms a Houou Girl Academy faculty meeting demanding answers about ten vanished classmates, only for the teachers she berates to decide the naive principal's daughter needs a hands-on lesson of her own. Captured alongside her classmate, a dark-skinned gyaru named Amika turns the whole ordeal into a game—endure a full night of sex and win a classmate's cure, with condoms as the only mercy offered. What begins as one sheltered girl's wide-eyed first encounter melts into a sweaty group free-for-all where Amika rides, teases, and calls every shot while the proud president's composure comes undone.