Burning souls, casting forbidden spells. "Black Emperor" Klein Grindelwald successfully traveled through time and started his third life. This time, he wants to shut up all doubts and prejudices and ascend to the highest Mithril Throne in the magic world in another way! "Knowledge is the eternal pursuit, and power is just a by-product in the process of seeking truth." "Magic is neither good nor bad, neither black nor white.

Chiba transmigrates into Kirigakure, becoming a member of the Snow Clan, facing extermination. He starts with the Ice-Ice Fruit and masters its power! Level 100: Ice Age, freezing the entire Kirigakure! Level 200: Frozen Space, even space-time ninjutsu cannot escape! Level 500: Frozen Time, stopping the flow of time, the entire ninja world at his mercy! Haku: Compared to my brother's Ice Release, mine is utterly insignificant. Mei Terumi: You bastard Chiba, the Mizukage is yours now, let me go! Kaguya Otsutsuki: Why can't I move? You... what do you want to do?!

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?]

Lin Yuan was transported to the Naruto world by the system, only to discover that the system had mistaken his host.

Just as he was about to break away from Lin Yuan, Lin Yuan's mistake caused the system to be damaged, leaving only a Green Lotus Martial Soul and a system remnant.

Watch as Lin Yuan, with his foresight and the Azure Lotus Martial Soul, seizes the position of one of the Five Kage from behind the scenes and establishes the United Nations of the Ninja World.

Three years after graduating from Hogwarts, Felix walked into this magic school again, only this time, he was a professor!

What kind of sparks will collide with the combination of Muggle wisdom and magic?

PS1. Teaching ancient magic texts;

PS2. Timeline, three elementary school and second grade;