[Crossing over + becoming a cat + pseudo-antithesis + single CP Hermione + warm daily life]

Original title: "The Secret Black Cat of Hogwarts". The protagonist is not a saint, and the IQ of all the characters is basically online.

The Oriental Black Cat brought mysterious power into Hogwarts. There are so many ghosts in the school, I really want to eat one, the Dementors taste very good, Voldemort is the main meal, there is no escape!

Centaur: The end of the bear, the destroyer of herbs, the nemesis of the eight-eyed giant spider, the ominous darkness...The Mars tonight blinded my eyes.

Draco: He is a true aristocrat! What an elegance!

Simo: shepherd of lost lambs, ferryman of the sea of ​​soul, life mentor, pioneer of art.

Macon: I'm a regular little black cat.

Voldemort: Great! I am beginning to understand everything!

Harry Potter:

In 1991, Harry Potter, who was looking forward to campus life, stood on the platform of the Hogwarts Express, accompanied by his parents, godfather, Uncle Remus and a snow-white owl, and hugged and said goodbye to them one by one. The wind blew his bangs aside, revealing his smooth forehead above his green almond-shaped eyes. He just felt that he was the happiest little wizard in the world. The last person to say goodbye to him was his godfather, Sirius Black. "Harry, remember, have fun!" Black squatted down, his grey eyes sparkling, "If anything happens, you know, just look for Uncle Regulus—" This is a story about a game geek who plays "Assassin's Creed" and travels through time to the story of Regulus Black, a relative of Harry Potter. Regulus is responsible for hard work, and others are responsible for happiness! Protagonist: All..

[Slytherin][Hermione is the only female protagonist][More rigorous: After living in another world for ten years, the protagonist barely remembers a little about Harry Potter][Not a system]

The false devil:

Gather the Saints to fight against the Muggles.

Occupy Britain and attack the school.

The real devil:

Destroy the world and cause great suffering to all living beings.

Elias traveled through time for eleven years and suddenly found out that he had traveled to the world of Harry Potter and was chosen by the bloodline of the devil!

You only need to gather three of the seven deadly sins: pride, wrath, laziness, greed, envy, gluttony, and ecstasy, and the power of the devil in your blood will automatically summon the devil to possess you and destroy the world!

For the peace of the world,

From that day on, Elias knew that his idle life would be gone forever...

If Dumbledore had not defeated Grindelwald.

If the war between wizards and Muggles really broke out.

If the finger witch that the faded one failed to meet was reborn in the body of an 11-year-old wizard girl.

My name is Hermione Granger, and I will rebuild the magic circle of this broken world.

(Contains secondary settings, rational discussion)

What era is it now? Are you still using traditional magic wands?

Come try this round wand, which can release three spells at the same time, and its main feature is the surprise effect.

Let’s take a look at this one. This staff is 1.5 meters long and made of iron wood. Dragon breeders all say it’s good.

There is also a cool lightning wand, a two-handed wand with double the power, an easy-to-operate trigger wand, and a finger-sized 7.62...

As the only designated heir of the Ollivander family, Siren feels that he needs to give the backward wizarding world a little shock.

Adrian Wisen, who traveled to the world of Harry Potter, didn't have any big ambitions. As a professor at Hogwarts, his daily routine is to take care of children, farm, and cause trouble for the elderly headmaster. Everyone who knew Adrian Wisen also knew that he was a kind and amiable wizard. Oh, there is one important thing. Never go near those plants he grows!

Edward traveled through time again and came to a mysterious world.

From then on, there was a stranger here who could travel between the two worlds regularly.

So, what will he bring to both worlds?

ps1: This book is a traditional fan work and will not completely abandon the original characters to tell the story. The heroine is Miss Justice, and she may join the Queen later on.

ps2: The path of the protagonist of this book is semi-original. He takes the path of [Apprentice] in the early stage and starts to change in the middle stage.

ps3: The protagonist is basically invincible in the same level, but he can't kill high-sequence enemies.

On the day he turned 11, Tom Riddle received his acceptance letter to Hogwarts, and his soul merged with a traveling soul from our world.

A new Tom Riddle is born, and he will take the wizarding world by storm.

With future knowledge and some creativity, he will achieve anything he sets his mind to.At the same time, he is also in the world of the Marvel Cinematic Universe/X-Men.

No harem, by the way

Darren traveled to the Harry Potter world and became Harry's twin brother.

Just as he was wondering whether he should hide for seven years with this identity, he obtained the Holy Father System.

As long as you play the role of the Holy Father,

you can get the Holy Father Points, which can be used in the mall. "Ding, congratulations on getting Phoenix Carol"

"Ding, congratulations on getting Obscurus."

"Ding, congratulations on getting the Blue Dragon's Reverse Scale"

"..."

With the help of the system, Darren, who played the role of the Holy Father all the way, found that the road to becoming a god was surprisingly easy.

Anduin Wilson, founder of tactical training, international Auror tactical training instructor and equipment supplier, Hogwarts tactical training professor, Merlin Knight First Medal winner, International Wizard Duel Tournament Champion, Wizard International authorized black wizard bounty hunter, honorary chairman of the International Alchemy Research Center.

——

His students always like to call him, "the one who fought in Hogwarts", "the terrifying instructor who conducts military exercises in the school every year"...

——

And his legendary story will start from the summer of 1980 when Voldemort had not disappeared.

——

My name is Anduin, I live in the villa area of ​​Godric's Hollow, I don't smoke, I only drink a little, I won't insist on winning over others, and I won't create enemies that give me a headache or keep me awake at night.

However, if I really have to fight, I won't lose to anyone.