Hogwarts: A History. Basically Hermione got expelled for sucking dick and yeah now she is a dentist.
1000 years later Harry realised that he never brushed his teeth let alone shower and so he went to the muggle dentist because all the other wizards had commit suicide. So when he went there Hermione drugged him and used Imperius curse to make him marry her and then she raped him in his sleep and also slept with Gooku and therefore they had 10000 super sayan babies because she used that Gemimo charm to duplicate her zygote eggs and used that charm they used to enlarge cars to enlarge her womb so that she could have all the babies she wanted. Then she went and reestablished Hogwarts and did a big shite in the great hall. She made love to the giant squid. Then she swam to the bottom of the lake and up again and basically my story is long now and it sticks to what the title says.
The End