Having transmigrated into the last bloodline of the Grindelwald family, he initially wanted to live a low-key life, but was forced to bind himself to the "Underworld God System".

From then on, the style of Hogwarts completely went astray.

"Petrify everyone? That's too lame. Come and witness the power of our Zaun petrification!"

"Want to learn the Patronus Charm? First, pay protection money to the system. Avada Kedavra can turn a melon into a rainbow color for you."

Dumbledore looked at the savior, who had been turned into a "henchman," and fell into deep thought: "This kid...maybe he can form the most cowardly villain alliance in history with Tom?"

Until one day, I was cornered by the Dark Lord, and the system suddenly prompted me—"Hey buddy, there's only one guy on the other side, call for reinforcements to take him down!"

【Funny + System + Time Travel】

Traveling through the world of Harry Potter, Howl Weasley awakened the "氪金" system. As long as he had Galleons, he could continue to become stronger.

Others rely on hard work to study, but Hall relies on Galleon.

Others rely on their understanding to learn, but Hall relies on Galleon.

Others rely on talent to learn, but Hall relies on Galleon!

As long as you are willing to pay, you can destroy Malfoy, Black, and Lestrange.

As long as the money is paid, even Dumbledore can kill him.

Since then, the reputation of a "money-making madman" has quietly risen in Hogwarts.

Mysterious man: "I heard you are very powerful in magic, kill someone for me."

Hall: "One hundred Galleons."

Mysterious Man: "Here... help me kill Voldemort."

Hall: "Who?"

Mysterious man: "Are you scared?"

Hall: "You have misunderstood. That is the last bloodline of Slytherin, the great leader of the Death Eaters, the legendary Dark Lord, and the undead with seven clones!"

"This money is not enough..."

[Unparalleled Perception + Growth Flow + Dark Lord Template + Invincibility]

Garlon is reborn in late twentieth-century England.

It was only after receiving the Hogwarts acceptance letter at the age of eleven that he realized he had traveled to the world of Harry Potter.

Fortunately, he awakened his incredible talent of understanding that hard work pays off and that one percent of effort will be rewarded.

"Read the Standard Spellbook, gain 100% of your reward, and comprehend basic elemental witchcraft!"

"Read 'A Thousand Magical Herbs and Fungi', gain 100% of your reward, and learn advanced potion formulas!"

......

Create elemental witchcraft system, create alchemy system, create transformation system...

Created the art of time and space spiritualism, created the art of devouring world stars, created the Holy Tower of the True Spirit...

Harry Potter: After meeting the Great Wizard of Truth, I am no longer afraid of Voldemort!

Professor Snape: Can anyone lend me some magic stones? I haven't built my wizard tower yet!

As Garlon becomes more powerful, he creates complete wizard systems one by one, and the era of Hogwarts's conquest of the world has arrived...

Luochen traveled across time, came to the world of Harry Potter, and got the wizard supreme system. Although the system is relatively doggy, it is called a ruthless system if it is turned on and hung up. Leveling up is like drinking water, destroying Horcruxes in a few days, crushing Snape in half a year, and rivaling Dumbledore in a year.

When everyone found out that Voldemort had become a woman, and Lockhart had become a big devil, Hogsmeade was not the only one, and the Chinese language was popular all over the world...

Luo Chen has become a god, overlooking all living beings!

Smile lightly: All life in the world is in my palm. Who is more powerful than me in the world?

A product of forbidden magic, heir to the Black and White Lords. A powerful body forged from three bloodlines, a brand new soul transcending time. The magical world is in turmoil, as two generations of Dark Lords clash on the same stage, wondering who will reign supreme.

Dumbledore said, "I am your father."

Grindelwald said, "Bullshit, he's obviously closer to me."

Voldemort said, "You are the boss, I accept your position and I won't fight you anymore."

Everything is in Hogwarts: The Forbidden Son of the Black and White Demon King.

[Single female protagonist Hermione + mainly based on the movie plot, later plot changes + system]

Kevin traveled to the world of Harry Potter and grew up in an orphanage without ever coming into contact with magic. It was not until he was 11 years old that he finally received the admission letter to Hogwarts.

Reborn, he just wants to enjoy this magical journey, but as time goes by, he can't help but get caught up in it...

- - - - - - - - - - - - - -

Snape: Kevin? Humph! Just a cocky brat with a bit of talent.

Dumbledore: Kevin is such a good boy who would go to great lengths to help his friends.

Voldemort: Kevin, this unethical and despicable villain! He has attacked me with a crowbar every time I die!