After traveling through the Harry Potter world for seventeen years, Whitefall, who could only use dark magic, was expelled from Hogwarts and became a Death Eater. He was later imprisoned in Azkaban for helping Voldemort.

With no other options left, he took out his wand and was about to commit suicide.

As he was about to die, he heard a golden light explode in his head.

[Ding, your Infinite Forbidden Spell System has been bound.]

No, I was already in Azkaban, and Goldfinger only came?

When he woke up again, he had returned to the scene seven years ago.

At that time, he had not yet entered Hogwarts and was surviving in the cracks of an orphanage.

With the help of the system, Bai Yun uses power far beyond black magic to reach the pinnacle of magic.

If he were to live his life over again, he would make the entire magical world submit to him!

"Auror? What does your arrest of dark wizards have to do with me, the Forbidden Spells Master?"

"Death Eaters? Do you think a mere Voldemort is worthy of my submission?"

"Defense Against the Dark Arts? Sorry, I was instantly killed by a forbidden spell!"

In this life, Bai Yun officially opens a new era of the magical world with his memory and golden finger!

Harry: It seems my classmates are more dangerous than Voldemort?

Dumbledore: Our house has opened Azkaban?

Voldemort: You are using my words!

Nietzsche John Holmes, a child who was forcibly adopted by the Watsons during a mission, began his crazy HP magic journey from this moment on.

Hermione Granger: "You shouldn't hit your classmates, Mr. Right!"

Nietzsche Holmes: "Become a superman who resists the strong, Miss Obedient~"

He will have a series of titles in the future - the third generation of the Dark Lord, Superman, the secret lover of the Minister of Magic... (Sorry, it seems that some incredible things have been mixed in)

But the first difficulty facing him is:

Sherlock Holmes, who looks like Iron Man, and Professor Snape have started to be venomous to each other again! !

[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:

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)

Matthew traveled to "Harry Potter", only to find that the world was facing the invasion of various foreign evil gods:

The "Dimensional Devil" that rules purgatory, the "Eyes of the Abyss" that dominate the spirit world, the "Paradox Devourer" that occupies the void...

There is also the "Blood Lord" who stole his chance to travel through time and whose strength has undergone a qualitative change...

There are suddenly many evil cults in the world. They are the root of the old beliefs and the anchor point for the invasion of foreign gods.

Fortunately, the system has awakened an incredible wisdom!

Yes, you read that right! The system has given itself a cheat code!

And as the host...Matthew can completely skip the comprehension steps and directly obtain the results of comprehension!

What does your understanding mean to my understanding? We just have different divisions of labor.

Many years later, when many evil gods were willing to burn the world to death in order to descend upon Hogwarts:

[You have come into contact with the origin of the laws of space. Due to your extraordinary understanding, you have gained the right to manage the crystal wall of the world.]

[You watched the world that was about to fall. Due to your extraordinary understanding, you mastered the endless world destruction chain.]

You can figure out the system, and leave Hogwarts to me!

Looking at the system prompt, Matthew announced domineeringly:

Evil God, get out of my Hogwarts!

…

Dumbledore: Wait, your what?

[Daily flow, easy, very talented in magic, from the same class as the Weasley brothers, single female protagonist (original), may be a little worse in the early stage, but will improve in the later stage, so please watch it later]

The newly appointed director, the god who traveled through time, carefully created a car accident. Our hero, after a round of roulette, arrived in the magical world.

Here he met the principal who liked wool socks

The Professor Who Turned into a Cat

A giant bat who loves making potions

Twins who like to play pranks.

Favoring black friends from my own college

Tsundere aristocratic sister

A key keeper who loves Fantastic Beasts

etc. A series of good friends and professors

Learn magic here and live a peaceful life

But some vengeance still needs to be avenged.

"Come with me."

"I'll be your teacher before you enter Hogwarts, introducing you to the vibrant wizarding world and all sorts of wizards."

"I'll teach you everything I know: potions, spells, transfiguration, even the Dark Arts."

"And if one day you grow up to be a truly great savior, then point your wand at me."

"Use all the methods I've taught you, use all you have, and kill me!"

"Do you have the guts?"

"Lily Evans and James Potter's son—"

"Harry Pott!"

In a narrow alley drenched in rain,

Severus Snape, with smooth, fresh, non-greasy black hair, holding a black umbrella, reached out his hand to the nine-year-old savior of the wizarding world, who sat on the ground, his face filled with fear and bewilderment.

Every time you travel through a new world, you become a strange character or even a non-character.

Talking Tom, Knight, Witch, Slime, Snow King...

Ding Hai was also forced to start a wandering life in the heavens and all realms.

When he turned into Tom Cat, he received an invitation letter to Hogwarts School.

Then, the adventure of the fun people began...

In 1861, the footprints of the wizards had already stepped into the star world.

Countless unknown worlds, countless mysterious knowledge, and countless beautiful scenery are coming...

But Lynn came here with the talent of peeping, but he saw a panicked people and a strict class.

The strong are greedy, and the weak are procrastinate.

The world is still in chaos...

Some people say that strength is the only thing worth pursuing.

Some people say that human nature is the only beacon anchored by reason.

Lin En looked at the thorns everywhere in front of him,

Walk calmly, don't think so much...

He just chased his strength enthusiastically, and at the same time calmly followed his heart, and the ferocious thorns at the foot were broken one by one...

After a long time, he stood in the star world, looking at the vast unknown star domain, and whispered:

'What other wonderful stories are there on this journey...'

......

This is a mysterious journey about wizards

Sylby Krios's childhood was filled with cold metal and endless criticism. He always wanted to escape from this home. After secretly learning the family craft, he finally received a letter to Hogwarts.

"The Days of Child Labor in the Wizarding World"

“It’s not some animal translator.”

"My roommate is the future Dark Lord"

"Magic wands know not to do things they don't like."

"The thing that is wrong with cutting is definitely not the cake"

"Is it wrong for workers to be saviors?"