Roger traveled to the world of Harry Potter.

The game started on hellish difficulty; he became the apprentice of an old, powerful, and extremely temperamental dark wizard. Just as he was cautiously serving this unpredictable mentor, he unexpectedly discovered that the bio-computer he had developed in his previous life had also transmigrated with him!

From then on, Roger's magical training began with the three Unforgivable Curses! "Analysis of the Imperius Curse complete." "Begin observing Professor Quirrell."

Years later, when the Daily Prophet was preparing to write a legendary feature on Mr. Roger Lewis, prominent figures in the wizarding world spoke out:

Professor McGonagall (with a serious expression of amazement): "Without a doubt, Mr. Lewis is an unprecedentedly outstanding graduate in the history of Hogwarts." Dumbledore (his wisdom gleaming behind his half-moon spectacles): "I must admit that no one understood the nature of magic better than Roger. Not even the four founders of Hogwarts." Voldemort (in a complex tone): "It is well known that I made indelible contributions to Roger's magical research..."

Rita Skeeter (writing furiously with her quill pen, her eyes gleaming with gossip): "Mr. Riddle, was it the summer before Mr. Lewis enrolled?"

Voldemort (lost in memories): "Sigh...that summer, they invited me to participate in the experiment, though the method was crude...If they had said it was to develop an elixir of immortality, I could have provided tremendous assistance! I wouldn't have needed to go through the trouble of finding the Philosopher's Stone...I still deeply regret missing this opportunity to return sooner!"

"Robin, a model citizen, is transported to a magical world, inheriting the bloodline of the Eastern Phoenix from the start! After enrolling at Hogwarts, with his extraordinary talent and the blessing of the Phoenix bloodline, he gradually rises to the pinnacle of the wizarding world, becoming an existence surpassing even the god of magic, Merlin!"

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!"

Will Evans wakes up to find himself transported to the world of Harry Potter. Good news: he knows the entire plot. Bad news: he knows nothing but the original story. So, Will decides—to cling to Dumbledore's coattails and achieve a life of effortless success! "Professor, Quirrell has a face on the back of his head!" "Professor, the diary has a mind of its own, burn it with Fiendfyre!" "Professor, don't wear that ring, it'll kill people!" Dumbledore: ...? When the greatest wizard holds the script, Voldemort's Horcruxes face their most disastrous failure in history. In their first year, they prematurely eliminate Peter Pettigrew. In their second year...

[Slice-of-life story + no female lead + research]

Lin Yi, whose love for astronomy is etched into his soul, is born into the HP world with all the knowledge from his previous life and a super brain that can "remember everything he sees".

He thought he could easily become an academic star in the magical world, but he discovered that wizards' understanding of the brilliant starry sky above them was still stuck in the primitive stage of "divination of good and bad fortune".

How can we tolerate this?

With a wave of his wand and a telescope in hand, his goal is to elevate astronomy from a "required, easy subject" to a "cutting-edge magical engineering" capable of changing the magical world!

From drawing precise star maps imbued with magic to developing powerful spells that draw upon the power of the stars;

From analyzing the probability theory behind divination to creating astrological artifacts based on constellations...

While Voldemort and his followers were still obsessed with pure-blooded people on Earth, a scholar under the stars was quietly turning the entire universe into his magical laboratory.

This is the story of a hardcore academic genius who, in a magical world, uses scientific thinking to climb the magical technology tree, and incidentally crushes everyone else in the process.

Why did I transmigrate into this guy's body?!

Snap snap snap~

The angry boy raised his hands and slapped himself until his head looked like a pig's.

"Excellent work, reward me!"

A voice echoed in his mind, interrupting the pig-headed boy's chaotic thoughts.

You have received a reward of 666 Galleons from the system.

And in that Diagon Alley, a boy grasped his first magic wand...

"Wow! This thing is interesting!"

[You have received a Wizard Duel Gift Pack as a reward from the System Master]

[Bloodline Awakening: The Knight King's Legacy Technique - Excalibur*1]

——————

A casual, appreciative system master

A manual left behind by an adventurer who grilled a phoenix.

An ancient secret, its traces erased by time.

When the stone pillar that sealed history crumbled, demons symbolizing destruction emerged from hell.

In Hogwarts, the Knights of Conquest donned ferocious heavy armor and charged straight forward, their feet treading on blood and fire.

This is a not-so-serious, but still very serious, Harry Potter fanfiction.

Welcome to the world of magic!

The blue nine-magatama Rinnegan, with a fat, silly and cute duck god standing next to it.

Until one day, Voldemort and his army of Death Eaters surrounded Hogwarts Castle.

Our little Sith was guarding the castle gate alone.

"Tom Riddle, today you will feel what true despair is!"

"Psyduck, Freeze Ray!"

Poor Bellatrix was frozen into an ice sculpture.

"Senjutsu, Wood Release, True Thousand Hands!"

"Susanoo!"

Chen Hao stood on top of a hundred-meter-high Susanoo Buddha, looking down at the shivering Death Eaters below.

"Are you ready?"

Inside the castle.

Luna: "Sith, you're so handsome!"

Hermione: "Harry, are you sure your cousin is human?"

Ron: "Harry, a new generation of Dark Lord is born, although this guy is a bit flat!"

[Single female protagonist Hermione (yandere version), invincible, daily, only the Harry Potter world, a lot of personal settings.]

[I'm really a yandere, I don't like it if you mistakenly enter. I really can't write a description, so let's leave it at that.]

Humans are the protagonists of this world. They will never know their own potential, let alone what kind of existence they can give birth to.

When humans created the word fear, fear took on a physical form...

Dumbledore quickly grabbed Orion who was about to cast a spell.

He wiped the sweat from his forehead and said, "Alas~ It's not appropriate to do this in broad daylight. Fiendfyre is a powerful dark magic and can't be used carelessly!"

Orion nodded and said, "I understand, Principal. We can let him go if we carry some people on our backs, right?"

[Single Female Lead], [Le Ziwen]

A time traveler who was sent into another world by a dump truck, with an unreliable grocery store system.

While eating barbecue and humming a song in his small home in the valley, the old man with a crooked nose suddenly put a wizard hat on him and said that he wanted to start school early.

Ye Shu, a good-for-nothing otaku, traveled through time and space, finding himself in a mediocre modern city. With no supernatural powers, let alone superheroes, he expected to live an ordinary life. However, at the age of eleven, his life took a surprising turn. "Attention, freshmen! No student is allowed to enter the Dark Forest. This is for you, Ravenclaw Ye Shu! As a senior, you must not do anything that might lead the freshmen astray!" Dumbledore declared at the freshman welcome dinner. "A cauldron is for brewing potions, not for cooking. Ravenclaw students, especially, do not imitate your senior, Ye Shu!" Snape sternly warned the freshmen during Potions class. "Broomsticks are for riding, not for standing on them and yelling about flying. Do not imitate Ye Shu's absurd behavior!" Madam Hooch declared, broomstick in hand, addressing the freshmen. "What on earth did this senior Ye Shu do that angered everyone?" The freshmen looked at each other in bewilderment.