My Mr. Song is extremely protective ( Machine Translation ) - Chapter 2491 - Chapter 2570, Chapter 21 of the Netherworld

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

This world has Fox Fairies, River Gods, Water Monsters, Great Demons and Cultivators who seek immortality.

A tale of urban demons and spirits, the mysterious exorcist and I.

Do you believe that supernatural creatures exist in this world?

I’m an ordinary college student while he’s the handsome and powerful demon exorcist from the mysterious old manor.

Our paths had never crossed before and yet, our fates became intimately entangled after one chance meeting.

The knocking on the coffin in the dead of the night, the little girl weeping inside the box-shaped structure, the good friend of mine who was cursed…

Together, the mysterious exorcist Mr. Wen and I embarked on a path into the world of the grotesque and motley.

Gradually, I realized that I had developed special feelings for him that went beyond friendship…

But, the problem is I’m a man!

- Description from Novelupdates

The strongest Hero in history, Nakamoto Keisuke.

He was summoned to another world in the spring at the age of fifteen years old, and when he successfully defeated The Demon King, he was already thirty-two years old. He had finished his role in another world and returned to Japan, but the reality that had been waiting for him was, “Middle school graduate with seventeen years of blank period” label. He couldn’t find a decent job and had no choice but to spend his days working part-time.

Before such a Nakamoto, a beautiful girl who self-proclaimed had come to return the favor, appeared. “I’m the reward for Hero who had defeated Demon King”, said Angelica, a girl who came from another world that persistently tempted Nakamoto to make her his wife. Together with a high school girl who looks like Elsa, his beloved girl that he lost in another world, Nakamoto with his cheats skills got caught in a harem life.