The Older Brother of My Student is My Secret Crush - Chapter 3: Call the Parents.

Tang Long was brought to the Immortal Cultivation World by an immortal who noticed his affinity to wood and cultivation.
Relying on his amazing talent, became one of the five emperors of that world.
He failed his Heavenly Tribulation and had his soul scattered into pieces but one part found its way to Qin Haodong on Earth.
With his excellent medical skills, he became a divine doctor of traditional Chinese medicine and encountered the baby girl he made before going into the Cultivation World, whose mother was as pretty as a fairy. The little girl even asked him to find more lovers. What a cute girl…

Death is sometimes not the end!
Dead prison!
This is a magical prison. It has the ability to draw the souls of the dead people of the world, and it also enables people to gain the ability of the souls of the dead.
When Qin Song woke up, he was shocked to find that he had come to the world of One Piece, and even more surprised that he found a prison in his body…..

- Description from Uukanshu

[Across the Stunning Beast Princess: Phoenix Against the World]

She, First Princess residence’s only legal daughter, yet known as a waste throughout the whole country!

When her cold eyes opened, she is the 21st Century’s most dangerous genius assassin!

When the sickly young miss exposes an edge, she is absolutely brilliant, and countless men and women in the world greatly admire her……

He is the absolute king of the night, cold blooded and ruthless. In troubled times, he by chance meets her, a zither and flute ensemble, since then in heaven and earth, life and death go hand in hand.

- Description from Novelupdates

A happy and fulfilled life, everyone wanted that. Rio was no exception, he too wanted to feel joy and fulfillment.

But how many actually achieved that?

He didn't know, but he knew that he was not part of those.

Rio, a part time editor of a webnovel called, The Last Stand, transmigrated inside the world of the novel. Not as a main character, nor as a villain, not even a student.

But as a professor.

A simple extra, professor that was never even mentioned in the story. Through some circumstances, he was the mentor of the main cast of characters.

Armed with knowledge of the future, treasures of the world, and skills of different origins. He would raise these students to their utmost as early as possible. He felt that there would be no problem.

However, as time marches forward he realizes everything was not as simple as he thought.

The plot, or the future, as he knew it was going further down the rails. The body he occupied had a mysterious identity. A higher existence watches over him.

Realizing the implications, he gave up on staying low key and unknown. He will strive, live, and survive admist this world of cruelty.

A world set in a modern futuristic setting where cults roam free, capitalism corruption rises, demons and other races exist.

However, even if he survived and lived, will he even feel happinness and fulfillment? He didn't know, but he will live still.