[Harry Potter] R'lyeh

In her previous life, Lalaiye was a college student who had just finished her thesis. While cosplaying as a wizard with her roommate, who also loved "Harry Potter", and going out to take pictures, she unfortunately ran into a terrorist attack.

She died, and then she came back to life.

Before she had time to mourn her previous life,

Lalaiye solemnly realized that her parents in this life seemed a little strange.

She was placed in a Gothic-style cradle, with a bizarre rabbit in her arms as a comfort toy. It was covered in blood and had been disemboweled.

What? Their surname is Addams?

Well, then, that's fine.

However, Lalaiye's peaceful Addams-style life was shattered when she was eleven.

The good news: This world has not only the Addams family, but also "Harry Potter", and she has received an acceptance letter from Hogwarts.

The bad news: It's 1971. There is no Harry Potter, and she will be starting school alongside the Marauders' generation.

The worse news: Her mother is a pure-blood traitor, and her father is a Muggle.

And Voldemort is at the height of his power.

The Sorting Hat never imagined that an eleven-year-old just starting at Hogwarts would have only one thought in her head:

It's time to figure out how to kill Voldemort.

It was stunned. "Gryffindor!"

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1. Pairing with Sirius, also known as "The Big Dog's Meltdown Diary".

2. The heroine's father is a distant relative of the Addams family patriarch from "The Addams Family".

3. Lots of everyday life (probably).

4. Happy ending.

Theme: The last enemy to be destroyed is death.