MTL - Faraway Wanderers - ~ Extra two previous generations

Zhang Xuan traverses into a foreign world and becomes an honorable teacher. 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 weakness would be automatically compiled. Thus, he became formidable.

“Emperor Haotian, why don’t you like to wear underwear? To think that you’re still an emperor, can you pay more attention to your image?”

“Fairy Linglong, if you continue to suffer from insomnia, you can always look for me. I have a way with lullabies!”

“You as well, Qiankun Demon Lord, can you cut down on the garlic? Do you want to stink me to death?”

…

This is an incredible story about the heritage between teacher and students, cultivating and guiding the world’s strongest experts.

In the vast and grand universe, myriad treasures and artifacts existed, some crafted by the Grand Dao of the universe itself, while countless others paled in comparison to the might of those created by the Grand Dao.Yet, amidst the cosmic expanse, one individual achieved the extraordinary feat of fashioning a treasure on par with those birthed by the Grand Dao.This creator wasn't mortal, nor an immortal cultivator who had ascended to the pinnacle of power.Neither inherently good nor bad, this enigmatic figure stood as the genesis of countless races—a shattered being unlike any ever witnessed.Known by many names, the most prominent being the 'Son of the Universe'.Born directly from the Grand Dao of the universe, he was not the first entity to be brought forth in such a manner.The universe had previously given rise to beings governed by the System of Reality—known by various titles such as Heavenly Daos or World Trees—acting as gods of creation for innumerable planets across the universe.These divine entities, also referred to as the 'Daughters of the Universe', were exclusively female, with no sons among them.However, the Grand Dao of the universe defied this established norm, birthing a Son and thereby breaking the rules of the System of Reality.The treasure forged by the 'Son of the Universe' was lost to time, only to reappear fortuitously in an alley on a fateful night.On that particular night, a young man named Sam Hailstorm stumbled upon this extraordinary artifact, forever altering the course of his life.As for why the Grand Dao birthed such an unimaginable being, why this treasure found its way to Sam, and the purpose behind the Son of the Universe creating such a powerful artifact, join Sam on his journey of discovery as he unravels the truths and destinies that lie ahead.

He has been abandoned by his clan.

He has been considered waste from his childhood but he is a “Peerless Genius”.

His father with the help of another person has sealed his Dantian to stop him exposing his exceptional talent but after his rebirth, he becomes the most dazzling star of the continent. However he faces crisis and difficulties as his Dao goes against the Heaven’s will.

Overcoming everything, eventually he achieves the highest boundary “The God of War”.

- Description from Novelupdates

Leiyin accidentally crossed into the One Piece World, and accidentally obtained the Naruto System.