In the year 1340 of the Shire Reckoning, one year before the departure of the Lonely Mountain expedition, the Grey Wizard had yet to visit the Shire, the Dwarf King was still forging weapons in the Blue Mountains, and the dragon still slept deep within the mountain…

In that very year, a young wizard unexpectedly crossed into Middle-earth, carrying the Hogwarts Sign-in System.

Overnight, Hogwarts Castle rose from the ground, standing tall and majestic on the lands of Middle-earth; flying broomsticks streaked across the skies, becoming a unique sight in this world.

In the wild lands, the legend of a black-robed wizard began to spread silently.

He was a friend of the Elves, a bane to the Orcs, a nightmare to the Trolls, and the lifelong nemesis of the Dark Lord Sauron.

Years later, when the Dark Lord was defeated, the Elves sailed West, and the Age of Men began—Duir, who had signed in at all corners of Middle-earth, looked toward the fabled lands in the West.

[Location: Aman. Would you like to sign in?]

My name is Ye Xiao, of course you can also call me Abel Astaroth, an ordinary time traveler, and now a pure-blooded demon.

His eldest brother is Beelzebub, one of the four great devils.

Sona is his fiancée and Rias is his childhood sweetheart.

After awakening the memory and activating the system, I found that there is more than just the Devil High School in this world.

Like cursed spirits, evil spirits, monsters, disobedient gods, etc.

However, this does not prevent him from having followers.

Adrian Wisen, who traveled to the world of Harry Potter, didn't have any big ambitions. As a professor at Hogwarts, his daily routine is to take care of children, farm, and cause trouble for the elderly headmaster. Everyone who knew Adrian Wisen also knew that he was a kind and amiable wizard. Oh, there is one important thing. Never go near those plants he grows!

I traveled through Naruto and became a daimyo at the beginning. The system rewarded me with the power of six paths!

A big name, and having offspring is definitely very important!

Humph, I have both strength and power!

Sarutobi Hiruzen, you are old, it’s time to give up your position!

Is Orochimaru a scientific genius? Come be my chief scientist!

Tsunade is a medical prodigy? Sign a lifetime employment contract!

Uchiha? No night of genocide!

Hinata? The caged bird is released!

Itachi? Obito? Danzo?

Uchiha Madara? Otsutsuki Kaguya?

All of you die!

Traveling through the Doupo world, the plug-in is a diary. Chu Xiao was full of black lines: "Who writes a diary?"

Writing a diary can reward fighting skills, fire treasures, magical powers of the world, and everything else?

"You are really good at judging people!" Chu Xiao said that he is not serious at all.

Knowing that I will be seen, I have read countless books, but can't I make up a little story?

As a result, the style of painting in the Douqi Continent and even the entire world has changed.

Xun'er: "The men chasing me are from Zhongzhou to the Jiama Empire. You treat me as air. Go and soak a snake. I will beat her back to make snake soup."

Medusa: "What do you mean by being with this king is an obligation? You are cheap. This king will tie you up and bring you back to be a son-in-law."

Xiao Yixian: "Accompanying is the longest confession of love, but you dare not give me a name. Isn't it bad to bully my evil poisonous body?"

Yun Yun: "You said I was your first love. You destroyed the Yunlan Sect without mercy. Let me destroy it again as the leader of the Hua Sect?"

Han Yue and Han Xue: "Explain what super doubling means." Su Mei, Cao Ying, Huo Zhi...

The fake Holy Grail War in Xueyuan City is about to begin.

Moran, who traveled to Type-Moon, is thinking about how to pass the level with one life!

Waiting online, urgent!

Ding! Successfully activated the life simulator!

[You expelled the foreign Olympus Twelve Mecha Gods, took the hand of the Earth Mother, and re-opened the country and mythology]

[You are the lord of the Millennium City named Brunstad, and the king of the earth that Zhu Yue loves]

[You are the last king of the end of the Age of Gods, who single-handedly prevented the Age of Gods from fading, and made the Age of Gods Britain continue to this day]

Behind the brilliant and dazzling life simulator.

Moran is facing -

Elquet: "Didn't you say that the Millennium City would pick me up? Why did you come to participate in the Holy Grail War!" Altria

: "Elbow! Come back to Britain with me!"

Elly: "Moran! What's wrong with these women!?"

Looking at the group of confidantes who are constantly approaching.

Moran feels that this will be the most difficult Kidney Cup War in the world.

Lin Cheng has traveled to the Blue Star World, a world of mixed anime and manga! With the invasion of alien beasts, the heroines of the original story have also traveled to this world! At the beginning, Nangong Nayue, Yakumo Yukari casts her gaze at him! He attends Tokiwadai Academy, but his teacher is Tokisaki Kurumi! Gabriel has moved in next door, immersed in the game SAO! Lin Cheng is done pretending! Entries plundering system! Activated! [Three-dimensional Human (Color): As the only three-dimensional human, your existence is extremely attractive to the opposite sex who have been upgraded from the two-dimensional world!] [Seraphim (Gold): One of the top mythical creatures, a high-level angel, possesses the power of announcement, resurrection, mercy, enlightenment, and even annihilation.] [Divine Spirit Suit - Third (Purple): ...] [Ability to manipulate realms (Gold): ...]

After traveling to the Harry Potter world, Vaughn awakened the reputation system. As long as his reputation can be widely spread, he can gain reputation points to add points to the magic he has learned and upgrade it. There are also various tasks that reward magic power and even talents. So... the traveler keeps a low profile and pretends to be a pig to eat the tiger? Follow the plot and become a male mother for the iron triangle? Not possible! Hogwarts, the legendary white devil Dumbledore, the fateful entanglement between Harry and Voldemort... These are the best reputation machines. How can you get rich without stirring up trouble and destroying the plot? Harry: "Vaughn should be the savior. He stopped Voldemort from taking the Philosopher's Stone." Lupin: "Wolfsbane Potion, Werewolf Affairs Committee... Damn, it's a heart-pounding feeling!" Cornelius Fudge: "I want to rule the werewolves, I want to recruit Vaughn Weasley... Damn Dumbledore treats him like his own son, no, he protects him like his own father!" Dumbledore: "Vaughn is a magical genius, but what is more dangerous is his thinking. He always reminds me of someone. I must guide him well..." Vaughn spread his hands: "Don't get excited, resisting Voldemort, recruiting werewolves, challenging the Statute of Secrecy and starting a wizard revolution... I just want to gain some fame!"

Good news: I have traveled through time and space and reborn. I will live another life and be free and unrestrained. I have money and women.

Bad news: I was reborn in the Naruto world and I am ordinary. I have no blood, no family, no resources, and I am destined to be cannon fodder.

Good news: I have a golden finger. Can I cash in the future in advance? Overdraw the future? Advance the future? Simulate the future? Who cares!

Enrich the present with the future, and determine the future with the present. Step on the right foot with the left foot and soar into the spiral.

Do you think I am only twenty years old?

Excuse me, I have lived for hundreds of years!

Not enough chakra? I have a future simulation and hundreds of years of growth period.

Without ninjutsu resources, I will get them for free in the future and develop!

Everything is possible in the future!

What? Uchiha...

"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.