MTL - Since 1981 Health School - Chapter 441 Find out the cause of death and pursue responsibility

Have you ever thought that the state of the world as it presently is, could revert to the laws of the ancients? When a series of strange incidents beginning with the disappearance of his friend led Luo Yuan to question the possibility of an apocalypse, he becomes embroiled in the midst of a global-scale chaos.

Evolution has turned the flora and fauna of the vast and bountiful Earth into something that had never been seen before. Coincidentally, the all-dominating Homo sapiens have ended up at the bottom of the food chain. From mystery to crisis, will Luo Yuan discover a means of saving humanity by racing to the top of the food chain? Or will he strive in accordance with the law of the jungle? It is the dawn of an age of the survival of the fittest.

- Description from Novelupdates

The scum’s or villain’s long road of transformation was tentatively set to the world:
The abandonment of the educated youth’s wife (Completed)
The hidden marriage of the scum film emperor (Completed)
The best brother in the world (Completed)
The Phoenix male who destroy the bridge after crossing the river (Completed)
The treasonous general (Completed)
I’m an honest man (Completed)
To become the top scorer in the School of Agriculture (Completed)
The soft rice man’s self-cultivation (Completed)
The whole world is reborn (Completed)
I want to survive on a desert island (Completed)
The stallion male who has seized the opportunity (Completed)
The perverted self-salvation (Completed)
The spring of the loafer (Completed)
The misplaced life (Completed)
The miser career (Completed)
The ghost is out of feeling (Completed)
The Queen’s favorite husband (Completed)
The vicious girl with her godfather (Completed)
I want to be a good person (Completed)
I does not tear up the family (Completed)
The perverted common plant (Completed)
The Mary Sue’s men (Completed)
Every time I was reborn, someone wants to kill me (Completed)
The old people’s counterattack path (Completed)
The global evolution (Completed)
When I became a net red (Completed)
For you, good person (Completed)
His heart had white moonlight (Completed)

- Description from Novelupdates

She gave up her dream of shining on the ballerina stage —for him.She sacrificed her self-respect —for him.She forgot her true identity —for him.But even after all that, she couldn’t compare to the woman who held Ryan’s heart.Arwen Quinn, heiress of prestigious Quinn family, realized too late that no matter what she did, she would never win Ryan’s love. The future that awaited her was a life trapped in endless misery of a loveless marriage.So, decisively, she ends their relationship and walks away. What she didn’t expect was that in breaking free from Ryan, she had opened the door for Aiden to enter her life — a chance that he had been waiting for.Aiden Winslow, an enigmatic CEO isn’t just mysterious —he is determined, and won’t allow to take Arwen away from him again.____Excerpt:Aiden narrowed his eyes, “Are you sure about this?”“If I wasn’t sure, I wouldn’t have asked,” Arwen replied coolly. “Stop dawdling. If you’re unwilling, I’ll find someone else who can get the marriage certificates today.”His expression darkened as he pulled her close. “Once offered to me, it’s mine alone.”Unfazed, Arwen asked, “So, do you accept? If yes, we’ll get the certificates now.”“On one condition,” he said. “I don’t do contract marriages. The woman I marry will be the woman I share my bed with. If you agree, then we’ll—”“Not a problem. Let’s go,” Arwen said without letting him finish, pulling him into the Civil Marriage Bureau.

A Hentai World is a Dangerous Place, Especially if Your Best Friend is a Hentai Protagonist and You Are a Trap.