[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:

(Otome + gender change + group favorite + parent-generation + multiple male protagonists + multiple endings)

What? Others who traveled through time are the Dark Lord's daughter, Harry Potter's sister, or at least a divine beast with its own system, right? Good heavens, but when I come to this place, I become the hated Peter Pettigrew?

The good news is she's still a girl, but the bad news is she has to keep her vest covered at all times when living in the men's dorm. Why is Sirius looking at me with increasingly ambiguous eyes? What? Lupin, you want to talk to me alone? Snape, aren't you madly in love with Lily Evans? And... Newt? Who are you? I don't remember your name in the book.

Watch how Alayya turns the tide and transforms from a disliked little mouse into a popular heroine!

(Note: This article involves the gender reassignment of Peter Pettigrew. Those who are incompetent should leave immediately. You are also welcome to read my other articles.)

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.

(Otome + multiple male protagonists + sweet love + separate endings + parent generation + child generation) Lina, a male health expert, traveled through time to the magical world of Harry Potter and became Selina Lestrange, a therapist at St. Mungo's. She was also a crazy fan of Sirius Black. She took advantage of her position to go to Azkaban every day, but it was hard for her to "deepen her roots" in a field she was not good at.

See how she shakes off the label of "star chaser" and "rebuilds her reputation" at St. Mungo's! And wins everyone's love (mistake)!

Sirius: That woman has changed! How come she's still... pretty?

Snape: I don't have that disease, thank you!

Lucius: I heard that you can help me give birth to a daughter?

Bill: Thank you for your care every time

Barty Jr.: You saved me, my life is yours...

Please look forward to more male protagonists——

(Sirius chases his wife to the crematorium ➕ all members survive ➕ private settings like mountains, focusing on otome literature for a hundred years, the official pairing may be broken, if you don't like it, please don't enter)

Traveling to the world of Harry Potter, Ivan Vesemir became the heir of a pure-blood family.

Adhering to the central idea of "If you can survive, you will survive", Ivan handed over the Horcrux he got to Dumbledore, detoured when he met Harry Potter on the road, lowered his grades in the exam to make the professor ignore him, take a step back and find a way out;

Arm yourself with alchemy, study black magic and learn about your enemies.

And then, he was inexplicably targeted by the boss...

"What? Why can I achieve what I am today? Ah... It's embarrassing to say, they won't let me go on, so I can only find a way to kill them all."

Hogwarts Honorary Headmaster, Eagle of Helheim, Incarnate Man, Midas Toucher, Enemy of Goblins, First Class Merlin Medal Winner, Honeydukes Candy Shop Owner——Ivan Vesemir Said.

On that day that year, the savior Harry Potter wore women's clothes and rode a dragon into the sky.

On that day that year, Dumbledore, the headmaster of Hogwarts, lost his phoenix completely.

On that day, Voldemort, a disabled man without a nose, suddenly had seven more heads.

That year and that day...

------

George Weasley: "I hit Voldemort on the head with shit!"

Fred Weasley: "I've proven it's real, I've smashed it myself!"

------

Kreiner looked up at the sky and muttered, "This isn't Harry Potter at all!"

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.)

"What is the most valuable asset of Ravenclaw?"

"Wisdom."

"Then where does wisdom go?"

"Any direction, as long as we want, we can always find like-minded people in the house. Companions are our second wealth."

"Very good, that's it, we are united because we have the same aspirations. So, what is the most important thing besides that?"

"Of course, it is to send some of the other Ravenclaws to Azkaban."

"Absolutely right - this is how we Ravenclaws are."

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?

I've been transported to Hawkins, the town from Stranger Things, and become Will's brother, Jonathan Byers. This America is too dangerous; horror stories unfold everywhere, and the sweet air is thick with evil. The neighboring town is Silent Hill, with a street called Oak Street, home to the Shining Hotel. I've heard there's a cabin in the woods beyond town. Legend has it that deep in the forest lies a fairytale town inhabited by vampires and young wolves, while Jason and Voldemort lurk outside. From time to time, demons from hell invade the world, aliens are always causing trouble on Independence Day, and Thanos, the head of the Space Office, is willing to snap his fingers—if you're unlucky, you'll be vaporized to dust. Luckily, I have a Dungeon Fighter Online (DNF) game system with me, allowing me to become a professional exorcist and form an exorcist alliance. I've gathered Constantine, Johnny Depp, Van Helsing, Nick Wilde, and the Ancient One. Everyone, don't fight over this monster; let me kill it! I'm super strong… If you, fellow readers, find "This Stranger Things is a Bit Cold" enjoyable, please don't forget to recommend it to your friends on QQ groups and Weibo!