That was disgusting. The whole twin dynamic was just incestuous. And the protagonist was very clearly not on board with the advances. They got forced into a tight space then restrained before being forced sexually. This is just upsetting to read. For future reference keep your incest and rape fetishes off of the website you vile human.
@Autumn sky, Were you raped at a young age? Is that what caused you to develop a rape fetish? Instead of getting therapy you just became the monster. Sad and pathetic.