I Can Summon All the Gods - Chapter 20

Childhood sweethearts.
The most popular person in school is my childhood sweetheart.

- Description from Novelupdates

Born as the fifth son of a Duke, Rex Grimes. Though he was the youngest, he was the toughest contender to the first son of the Grimes, the hope of the Grimes also titled as once in a millennium genius.Will he be able to fight his way out. Maybe not.Facing an unfortunate accident in which he lost all of his cultivation. All his hopes and dreams were lost.{The train has arrived at Valmere Valley}Deciding to go back to his childhood warmth. Rest was the best cure but it seems that there was still a way for him.[Gacha Wheel][Insufficient points]'How do I gain points'[Please Get wives and practice the art of love and creation of life][Only Ying and Yang will give birth the to creation of points]

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

After dying in the world of One Piece, he was reincarnated once again this time as Neji Hyuga. But fate was no kinder here. With his father dead and the cursed Caged Bird Seal looming over him, for his survival he made a ruthless decision....