MTL - Harry Potter and the Secret Treasures - v2 Chapter 1829 cleaning

Kyoukai Senjou no Horizon chronicles the story of a futuristic civilization returned to Earth after constant warfare hindered them from traveling beyond the post-Apocalyptic Earth. At this stage, a small archipelago called the Divine States were the only hospitable land on Earth. In order to regain the space-faring technology they had lost after many years of war, they decided to recreate history with a book called the Testament as a guide.

It is the year 1648 in the Testament Era. Toori Aoi, Chancellor and Student Council President of the only academy on the airborne city-ship Musashi, faces the ten-year anniversary of the death of his childhood friend Horizon Ariadust in an accident. As he prepares to celebrate the occasion by proposing to P-01s (an automaton who looks exactly like Horizon) he discovers that his suspicion about P-01s’ appearance actually has a basis in truth; P-01s is in fact Horizon Ariadust, reborn into a robotic body. In addition to this, Horizon’s emotions had been stripped away and are now stored in eight powerful weapons called the Mortal Sin Armaments; which are now in the possession of key people in various established countries in the Divine States.

To retrieve the emotions of Horizon Ariadust, Toori Aoi along with his friends and allies begins a crusade against different obstacles as key events in history are recreated in a futuristic manner.

Shen Zhixian transmigrated into a book as a cannon fodder master who hatefully severed his disciple’s spirit root. This disciple fell into the devil’s path and returned to make mincemeat out of him.

Shen Zhixian just happened to transmigrate into the last moment of the master’s captivity, and then he was reborn again.

After rebirth, he devoted himself to fostering and supporting his disciple, only to discover later that his disciple was also reborn.

Even worse, the disciple still retained the memory of his life before rebirth.

Shen Zhixian: …Disturbed.

Afterward, he realized one truth: Being a master is a high-risk occupation. Not trivial at all!

- Description from Novelupdates

In his first life as 'Caine Wilson', was the villain—ruthless, cunning, and very powerful.He played his part perfectly, crushing the so-called “protagonist” and parading his enemies, their families, and anyone who crossed him naked through the streets.He watched with glee as the “hero” lay broken, stripped of his dignity, before finally ending his pitiful existence.But just as Caine, thought he had finally won and secured his place at the top, 'Higher ups' intervened.A booming, ethereal voice—like the universe’s pissed-off judge—shook the skies:“You have violated the sacred code of villainy! The villain shall not win. The balance has been broken. Caine Wilson, the world hereby rejects you!”Before he could even enjoy his victory, his world blinked out, like a story whose writer just erased the last chapter in frustration.Everything went dark.And when he awoke, he wasn’t Caine Wilson anymore.He was 'Su Xiaobai', a nobody on 'White Cloud Star', a world of cultivation, martial arts, and endless struggle.But this time, things were different.He could feel it—he could see through the cracks of reality itself.He could break the fourth wall!He wasn’t just some reincarnated soul; he was a villain who had 'seen the system', who understood the game.And he was about to flip it upside down.

Traversing into another world, Zhang Xuan finds himself becoming an honorable teacher.

Along with his transcension, a mysterious library appears in his mind.

As long as it is something he has seen, regardless of whether it is a human or an object, a book on its weaknesses will be automatically compiled in the library.

Thus, he becomes formidable.

“Emperor Zhuoyang, why do you detest wearing your underwear so much? As an emperor, can’t you pay a little more attention to your image?”

“Fairy Linglong, you can always look for me if you find yourself unable to sleep at night. I am skilled in lullabies!”

“And you, Demon Lord Qiankun! Can you cut down on the garlic? Are you trying to kill me with that stench?”

This is an incredible story about teachers and students, grooming and guiding the greatest experts in the world!

- Description from Novelupdates