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?

Returning from the mysterious world, witch Harry only wants a peaceful life and to experience Hogwarts, this fairytale playground, firsthand. However, a certain self-proclaimed Dark Lord and some so-called "important figures" seem determined to prevent her from having her way. So, it's time to let the wizarding world know what true "calamity" really is. (Those who haven't read Harry Potter or Lord of Mysteries won't be affected.)

There's a legend circulating around Hogwarts: Miss Lacus's first cry gave birth to the Dementors; Miss Lacus's first nightmare gave birth to the Obscurus; Miss Lacus's first fear gave birth to the Boggart; Miss Lacus's first laugh gave birth to Peeves; and Miss Lacus's light side became Voldemort! "Hogwarts, that's all a lie!" Miss Lacus protests. "Your light has no dark, heavy secrets, only light and bright!" (A playful Hogwarts fanfiction, featuring many meme elements and some Hogwarts Legacy content. The protagonist is a lone wolf, not for women.)

[Gender-Changing Cookie] [Multi-Purpose Tent] [Bamboo Dragonfly] [Adaptation Lamp] Lynn's four-dimensional garbage bag always manages to unearth many magical secret items, even if they're just a bunch of old stuff, they still bring help and joy. The helpful Lynn arrives at Privet Drive and encounters Harry Potter, who is struggling. To help him ease the strained relationship with his aunt and uncle, he gives Harry a magical cookie that completely changes his life. And when Lynn arrives at the magical Hogwarts School of Witchcraft and Wizardry, what changes will he bring to the magical world? Welcome to—Harry Potter and her best friend Lynn's Hogwarts daily life; Severus Snape's new life after shaving his greasy hair; Voldemort realizing he may have misjudged the object of his prophecy...

Joel Hemis always thought of himself as an ordinary druid. Until he was eleven, when he received a letter delivered by an owl—and from that moment on, he became a proud little magical owl. ...That school year, the Forbidden Forest welcomed a Patronus. By the time all the teachers and students of Hogwarts realized what was happening, they were already surrounded by the Forbidden Forest! Until one day, the mysterious man came knocking—Joel: "Sorry, I just want to plant trees in peace and quiet, I don't want to fight!"... [P.S.: This is a lighthearted story about going to school and happily planting trees...No need to have read the original books.]

At first, Aiden Winchester thought he had simply been transported to another world filled with malevolent spirits. However, an acceptance letter from Hogwarts changed his life as a witch hunter. He never imagined that he, who had always only hunted witches, would be accepted into a wizarding school. Witch hunter? Wizard? These two identities didn't conflict at all. Aiden, twirling his Kurdish demon-slaying blade, stood at the entrance to the Slytherin common room. Since dark wizards all came from Slytherin, why not start there! This book is also known as: *Three Sentences That Made the Headmaster Pay Me Ten Thousand Galleons*, *I Really Didn't Want to Be a Wizard*, and *Exorcising Voldemort Is Also Exorcism*.

The level of magic determines the allegiance of justice. "Truth lies in the difference of magic; history is the hymn written by the survivors." Owen Carrot, looking at Voldemort and his Death Eaters standing before him, said calmly, "You are noisier than the wind; dance with the wind, endless wind." Watching Voldemort and the Death Eaters being swept into the air by the powerful tornado, Hogwarts fell into an eerie silence. Only when the young wizard who had been reading a book while walking disappeared did someone quietly breathe a sigh of relief. "I knew it. Even Voldemort can't break Owen's rules, or he'll be punished too." A Mr. Weasley, who wished to remain anonymous, looked at the people spinning in the wind, his expression not too good...

The protagonist, now Tom, has transmigrated again, this time to the world of Hogwarts. He's adopted by Luna and becomes part of her family. Tom, who thought he could only attend classes after his owner enrolled, receives an acceptance letter from Hogwarts on Luna's tenth birthday! Thus, a resilient, mischievous cat with some strange abilities enters Hogwarts as a student. No one knows what changes his arrival will bring to the wizarding world. (Updated at 12 PM as usual)

In his previous life, Harry defeated Voldemort, protected the wizarding world, protected Hogwarts, and became a great wizard like Dumbledore. After a long time, when he was about to leave, he thought of the blond boy. What will happen to them after their rebirth? Harry's life will also change, and his relationship with Professor Snape will also be unusual.

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.