While at Hogwarts, I awakened the Middle-earth Survival System, but something about the system was a bit off… [You received your Hogwarts acceptance letter—Main Quest: The Fellowship of the Ring!] [You didn't go to Gryffindor, but instead joined the Hufflepuffs, a bunch of gluttons—Reward: Hobbit Racial Talents (Stealth + Gluttony)!] [You refused Malfoy's handshake—Reward: Strength +1 (That's how you deal with fallen elves!)] [You wielded your wand powerfully—Reward: Two-handed Sword Strike (Magicians should have some Strength)!] The system actually thought I was in Middle-earth from Lord of the Rings?! …Years later. Voldemort led his army of Death Eaters to attack Hogwarts. Before the Dark Lord could even finish reciting Avada Kedavra, Rowe Baggins was already in front of him, wielding Narsir, and with a backhand…

"You'd better find something to eat before dark." This was the first thing Kane heard after running away from the Dursleys. Okay, I knew I hadn't completely escaped the Famine world... but thankfully, his ability to manipulate his shadow in Famine still remained, not only saving him from starving to death after running away and being killed by invading shadow creatures at night, but also bringing him other benefits in this world. Wait... what does "for using dark magic in front of Muggles, now granted a VIP status in Azkaban" mean? Dumbledore blushed and quickly snatched the envelope from Kane's hand, replacing it with another. A Hogwarts acceptance letter, this time it's right.

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!"

While others rely on wands to get to school, he gets to get to school by reading! In Lin Xiu's schoolbag, "History of Magic" is a 'history rewind device,' "Advanced Potion Making" is an 'improvement cheat code,' and even "Standard Spells" can be read with a hidden attribute of 'accuracy +20%'—the academic genius system tells him: read ten books and you can level up; solve dark magic incidents and directly unlock new abilities! Dumbledore's distant nephew status makes him the professors' 'tacitly known target of attention,' but when Wolfgang, a remnant of Grindelwald's party, returns with 'wizard supremacy,' when the Ministry of Magic malfunctions and dark magic surges, when the ladies vie to research new spells for him—he opens the last book, "Ultimate Guardian Magic," and finally understands: this year's Hogwarts doesn't need geniuses, it needs a shield that can withstand all crises!

(Without the system, tags cannot be deleted!)

Have we arrived in the world of Harry Potter?

Or is he Malfoy's twin brother?

Watch how I teach this arrogant younger brother a lesson!

Malfoy: My brother is even better than Dumbledore!

Dumbledore: He won't be the next Dark Lord, but he will be the next White Lord.

Harry: My mentor in life! I must become stronger!

Snape: Your whole family is no good! Wait, no, he's his godfather…

"How does it feel to be given the name Rozier?" "Get lost!" "How can you be so heartless!" "Stop with that gloating look. And can you please stop bullying those three little ones and Malfoy? You're practically ruining them!" "Tch, what do you know? You're having fun outside, while I can only find my fun at Hogwarts." These were the days these two shameless rascals spent having fun at Hogwarts.

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!"

"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!"

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.