I Got a Fake Job at the Academy - Chapter 4

The protagonist is an accidental time traveler - he didn't wait, didn't guess, only dreamed, but ended up in history, which he didn't pay much attention to. He was just lucky with his lineage.Ryo is a new member of the Nara clan, from the Uzumaki lineage on his father's side, and it so happened that he was born not at the beginning of the known plot, but more than three decades and two world wars later. Now he has to figure out how to get out of this situation however he can.

Jang Joonbum started stream to enjoy an easy life.

After three years of marriage, Xia Zimu died on her and Gu Huaixi’s wedding anniversary.

She spent all her ten years of youth chasing him.

However, even though she was hit badly, until he died, he never looked at her.

After living a new life, she resolutely filed for divorce, and finally achieved a positive result with the man who had silently guarded her for ten years.

Seeing her being sweet with others, Gu Huaixi finally went crazy.

“Mumu, I was wrong, turn around and look at me, okay?”

Xia Zimu held Lu Jinghao’s hand, smiling like a flower.

“Sorry, Young Master Gu, I don’t have any place for you in my heart.”

- Description from novelbuddy

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates