Ethan, a transmigrator who was exceptionally admitted into Hogwarts School of Witchcraft and Wizardry, discovers that his magical talent is far above average. In fact, it's absurdly high. On top of that, he can use legendary ancient magic.

So begins his troublemaking career in the magical world.

What's this? A corrupted, black-mud-tainted Holy Grail? Slash it.

What's this? A noseless, bald Dark Wizard? Cut him down.

What's this? A ghostly boss from the last century? Send it to the afterlife.

What's this? An ancient hidden treasure beneath the school? It's mine now.

After a relatively easy fight, Ethan looks at the enemies collapsed in front of him and sneers:

"I didn't even use full strength, and you're already down."

Later on, having retired early and enjoying a relaxed life at home, former Auror chief Ethan shares his battle philosophy with a reporter:

"Light spells for blinding, disarming to remove weapons, stunning for knockouts—such a perfect combo!"

The reporter asks:

"What if that combo doesn’t work?"

Ethan smiles calmly and replies:

"Easy. Just use Avada Kedavra."

Note: This book includes significant alternate lore, out-of-character portrayals, and a modified timeline. Read with anticipation.

[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...

Many years later, Rita Skeeter, who had become the editor-in-chief of the Daily Prophet, asked: "When you decided to study at Hogwarts, did you foresee that you would be successful at Hogwarts?"

Mr. Andy Hall, then Minister of Magic, President of the International Confederation of Wizards, Chief Wizard of the Wizengamot, and holder of the Order of Merlin, First Class, replied helplessly: "?"

"At the time I didn't know a single spell, and I didn't even know I was a wizard."

Rita Skeeter: "So how did you learn magic?"

Andy: "You guys didn't [beep]?"

In 2026, Blue Planet was attacked by monsters from another world. Lin En, who was originally middle-aged, was forced to join the ranks of defending his country. Unfortunately, he was killed in an orc raid. When he woke up, he came to England 20 years ago. Reborn as Andres Mori with a complete set of golden fingers, he had a chance to save Blue Planet. Until many years later, he not only saved mankind but also led mankind to conquer the other world. He was called by humans: Marquis of Paradise Island, founder of Hogwarts, guardian of mankind, conqueror of the other world, and great magician.

(This work is a system-based work. The early stage focuses on building Hogwarts to train wizards. The middle stage allows the trained wizards to integrate into the Muggle world to establish a society where wizards and Muggles coexist. The later stage welcomes the invasion of the alien world and resists and counterattacks. The number of words is determined by the work's performance.)

In the magic world a thousand years ago, he traveled with four teachers for seven years. Ryan found himself back in 1991, back to the orphanage he was familiar with. After three days. He saw a pure white owl flying towards him with a Hogwarts admission letter in its beak. So Ryan knew that he would return to the Hogwarts that was familiar yet unfamiliar to him. "Mr. Ryan Elias." "Dumbledore called you the most outstanding graduate in the history of Hogwarts, the Dark Lord regarded you as his greatest enemy, and the dark wizards called you a wizard destined to be great. For these titles..." "Of course." Ryan answered calmly with the answer that should be given. "I approve of it all." Be it potions, duels, spells, alchemy, the dark arts, or even cooking and pranks. "Of course I will always be the best." Because he...

Hogwarts Hogwarts Legacy Invincible Harry Potter Daily Life

Ancient Demon King: "I heard that you are the legendary Dark Lord who killed countless people? How many have you killed?"

Voldemort: "Just call me Little Tom, I'll kill a few hundred of them."

The ancient demon king nodded with satisfaction.

"Not bad, so what about yesterday?"

............................................

This is a story about an ancient lawless demon king who was voted out of the underworld of the dead.

This is the story of a transfer student from Hogwarts who monopolized ancient magic a hundred years ago and is looking for fun in 1991.

This is a casual fork of the killing curse, the cabbage that can kill people, and the unspeakable person pretending to be a little wizard's daily life.

For thousands of years, names like Merlin, Gryffindor, Slytherin, Hufflepuff, and Ravenclaw have illuminated the magical sky.

In the past hundred years, Grindelwald, Dumbledore, Voldemort, these names, whether good or evil, have been guiding the direction of history.

And when Kyle opened the door to magic

A floating island rises before the eyes of billions of Muggles and wizards

He knew that a thousand years later

He is a legend!

The story begins. Ian thought he was just a little wizard with a bit of talent and a simple [plug-in]—as long as he worked hard, he could become stronger.

However, as time passed, he began to realize something.

The teachers guiding him in magic were either legendary powerhouses or figures straight out of myths.

*"Standing before you is the noble Apostle of the Maze, the Co-Spokesman of the Old Dead, and the heir personally chosen by the founder of Hogwarts!"*

What? The noseless monster wants to make a move?

He must have never heard of the original spell recorded on my Chocolate Frog’s Famous Wizards Collection Card!

Dumbledore: *"That spell…!"*

Dumbledore’s expression changed as Ian recited *"Call of the Guardian Spirit."*

Silver-white threads surged, intertwining and condensing until a familiar figure appeared, one that a certain professor had spent his entire life drowning in guilt over.

Ren Ping traveled to a fantasy world and became a useless elder of the Lingwu Sect. He was unable to practice and was seriously injured. His life was coming to an end. It was a start of a world-shattering disaster. Fortunately, he got the golden finger of extracting entries of all things. By granting entries to people close to him, he could obtain more powerful entries. Ren Ping recruited many disciples. [Extracting the Enlightenment Stone Entries: Enlightenment to God, Obtain Heaven-Defying Enlightenment] [Extracting the Ancient Sword Soul Entries: Self-mastery of the Way of the Sword, Obtaining Supreme Sword Talent] [Extracting the Meteorite Entries from Outer Space: Tough as Iron, Obtaining Supreme Flesh]. Ren Ping extracted entries to strengthen himself, and with their favors, he became an extremely powerful monster. Not only was his talent terrifying, but his methods were also weird. A few years later, Ren Ping's disciples were all over the world. At this time, everyone knew that all the monsters were disciples of the same person...

Ethan, a transmigrator who was exceptionally admitted into Hogwarts School of Witchcraft and Wizardry, discovers that his magical talent is far above average. In fact, it's absurdly high. On top of that, he can use legendary ancient magic.

So begins his troublemaking career in the magical world.

What's this? A corrupted, black-mud-tainted Holy Grail? Slash it.

What's this? A noseless, bald Dark Wizard? Cut him down.

What's this? A ghostly boss from the last century? Send it to the afterlife.

What's this? An ancient hidden treasure beneath the school? It's mine now.

After a relatively easy fight, Ethan looks at the enemies collapsed in front of him and sneers:

"I didn't even use full strength, and you're already down."

Later on, having retired early and enjoying a relaxed life at home, former Auror chief Ethan shares his battle philosophy with a reporter:

"Light spells for blinding, disarming to remove weapons, stunning for knockouts—such a perfect combo!"

The reporter asks:

"What if that combo doesn’t work?"

Ethan smiles calmly and replies:

"Easy. Just use Avada Kedavra."

Note: This book includes significant alternate lore, out-of-character portrayals, and a modified timeline. Read with anticipation.

The story begins. Ian thought he was just a little wizard with a bit of talent and a simple [plug-in]—as long as he worked hard, he could become stronger.

However, as time passed, he began to realize something.

The teachers guiding him in magic were either legendary powerhouses or figures straight out of myths.

*"Standing before you is the noble Apostle of the Maze, the Co-Spokesman of the Old Dead, and the heir personally chosen by the founder of Hogwarts!"*

What? The noseless monster wants to make a move?

He must have never heard of the original spell recorded on my Chocolate Frog’s Famous Wizards Collection Card!

Dumbledore: *"That spell…!"*

Dumbledore’s expression changed as Ian recited *"Call of the Guardian Spirit."*

Silver-white threads surged, intertwining and condensing until a familiar figure appeared, one that a certain professor had spent his entire life drowning in guilt over.

[System + Single Heroine (Hermione) + No All-Knowing Protagonist + Delicious Food]

The writing style is slow-paced. If you don’t like that, feel free to skip this book.

The protagonist kills Quirrell, takes control of Voldemort, and wreaks havoc across the world.

**Brooke, in the eyes of the professors:** Handsome, charismatic, polite, diligent, and eager to learn.

**Brooke, in reality:** A ruthless mastermind with a Gatling gun in one hand and raw power in the other.

*"Come on, Dumbledore, it’s time for you to pay your dues."*

The battle will determine the heights of power—

and decide who lives and who dies.

[Tarot Divination + Greek Mythology + No Romance + No Heroine + Magic Reform + Custom Settings + OOC + No Conspiracy Theories + Brotherhood & Solidarity]

*"Avada Kedavra!"*

The evil Dark Wizard cast the Unforgivable Curse.

Yet Asher, unfazed by danger, even laughed and taunted:

*"Come on! Kill me if you have the guts!"*

Then, the eerie green light struck Asher’s body—

but the one who dropped dead was the Dark Wizard himself.

*"Heh… Didn’t expect that, huh?*

*There are people under us!"*

"Dumbledore, hasn’t he already graduated? Why is he back at school?"

"Oh, Severus, don’t be so nervous. He’s the new Defense Against the Dark Arts professor!"

"Damn it! If I catch him using a cauldron to cook hot pot at school again, I swear I’ll duel him!"

...

"You are the worst class I have ever taught!"

"But, Professor… isn’t this your first class?"

...

"Miss Granger, as the study committee leader, you’ll guide everyone to read by the Black Lake every morning."

"Mr. Potter, as the sports committee leader, after reading, take them for a run around the Black Lake!"

...

"The countdown to the O.W.L. exams is 100 days!"

"Break the cauldrons, sink the boats—fight for full marks on the O.W.L.s!"

Douglas Holmes, a Hufflepuff with an Eastern soul, returns to Hogwarts three years after graduation to apply for a teaching position—

and brings a whole new style to the school.

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

After spending the sixth year at Hogwarts a hundred years ago, Harry returned to the stairwell in 1991 and received the admission letter from Hogwarts again.

"You mean, my parents were killed by a black wizard?"

Harry asked, "Who is that black wizard? Why are you so afraid of him that you dare not even mention his name?"

"It's Fu--," Haig replied cautiously, "Well, it's called Voldemort, because he has killed hundreds of people with his own hands."

Harry nodded without saying yes or no. "What about the next day?"

Haig: "Ah?"

Crossing into the magical world with a life no one could have imagined, Carl awakens the ultimate Capital System. As long as he earns enough money, he can unlock strange and powerful rewards. Hogwarts and the magical world, stuck in a medieval-like age, are about to meet a true capitalist godfather.

Watch as Carl transforms the entire magical world through the power of capitalism. A true villain never relies on violence—he uses the system to exploit others.

Carl: "Voldemort is an egg. His evil is nothing compared to mine."

System: "Yes, my dear lord, what you’re doing now has made you the most evil demon king in the world."

Snape: "Azkaban. He must be assigned to Azkaban!"

"No, wait. If he goes there, those prisoners will become his 996 employees."

Dumbledore: "He will be a good child with love in his heart."

Voldemort: "He’s a devil, the real devil. Those people have been exploited and have nothing left... Why do they still smile and say this is their blessing?"

Grindelwald: "You will succeed, child, for greater interests."

At just seven years old, Dina Avery was imprisoned in Azkaban, becoming Sirius Black’s fellow inmate.

On his first day behind bars, he discovered that "Merlin’s XX" wasn’t just an expletive—it was a real summoning ability. He could actually call upon Merlin’s powers, including but not limited to:

- Merlin’s Beard

- Merlin’s Stockings

- Merlin’s Magic

- Merlin’s Bloodline

- Merlin’s Treasure

From that day on, Dina relentlessly “borrowed” from Merlin’s legacy.

Four years later, Dina made history as the first young wizard to receive a Hogwarts acceptance letter while in Azkaban. After being picked up by Snape, he found that his home was gone.

But it didn’t matter. He was Merlin’s heir.

The scum responsible for his family’s destruction would soon face justice—

at the hands of the new Merlin, just like in The Count of Monte Cristo.

The orphanage has turned into a blood-soaked monastery.

Diagon Alley has become Devil’s Street.

Hogwarts is now a haunted castle.

The Forbidden Forest? A forest of death.

Ed couldn’t help but feel that this game’s dungeon was seriously messed up.

But hey, it’s just a game. Might as well play it!

Many years later, Ed looked down at the noseless monster before him and declared:

"Standing before you is the Lord of Crows, the Master of Death, the Supreme Protector, the Blade-Bearer of the Lost, the most ruthless Dark Magician in history—

and the legendary alchemist, Ed Moriarty!"