The wizarding world is by far more open about sex than the muggle one. Hermione takes advantage of that.
During Horcrux hunt Harry wakes up and finds Hermione sitting in his bed playing with herself.
As they study for their exams Harry made Hermione take a break so they could get off. Futa/M
During Harriet Potter's 8th year she tries to make sense(and peace) with the reality that Ron on a regular basis gives head to his roommates. femHarry. Mostly slash.
Hermione confides in Luna about what nobody other besides her and Harry knows.
A small backstory about why Lucius Malfoy became the person he is in the books, and the origins of his animosity towards the Weasleys.