Hogwarts: My Tsundere Girlfriend, Malfoy

After transmigrating into the world of Hogwarts and becoming the protagonist, Harry Potter, I thought my knowledge of the story would let me become a great wizard without a hitch. But...

What is this haughty, golden-haired, blue-eyed heiress Malfoy, the villainess?

And who is this sophisticated, older beauty Snape with black hair?

Crabbe, the tall female bodyguard? Goyle, the dim-witted gluttonous girl?

Harry noticed that his Hogwarts seemed to be just a little different.

A gender-swap story, a little bit of parody, but not too much.

Please note, not everyone has had their gender swapped.

It's based on the movies and original novels, though some details differ. If that bothers you, please go easy on me.