From Overlord To Multiverse. - Chapter 51 - 50: Undead vs Corrupted Spirit.

Our straight (?) bottom woke up ten years into the future and found himself on the bed of his childhood friend… At the start, the bottom was shocked to his very bones, but he soon quickly accepted this premise and found the whole situation to be rather amusing. Precisely then, the bottom once again went back to his timeline — back to when he and the top were just platonic childhood friends.

My name is Joo In-gong. The name that my parents gave me meant ‘protagonist’ of the world. Really?

From an apocalyptic world, Xu Feng transmigrates into a parallel world with a third gender. The heavens took pity on the 19-year-old who died as he awakened his ability in his original world, so he started a new life as a ger.What is a ger? The third gender, a man who can impregnate women and be impregnated by men.There were even more surprises waiting for Xu Feng. He not only awakened a wood ability from his previous world, he was also met with a contract marriage he couldn’t refuse in the new world.“Carry my son’s child, and I’ll make sure you live comfortably for the rest of your life.”“Whether you can birth a son for me or not, I don’t care. Just don’t get in my way, and I’ll make sure you want for nothing.”Xu Feng looked at his “mother-in-law,” then back at his “playboy” of a “husband” before looking toward the fertile fields and vast mountains.A peaceful farming life as a landlord with a spoiled young master was better than living life in the apocalypse. But Xu Feng was transported to a world with cultivation, demon beasts, and hidden secrets, a simple farming life might be too much to ask for.—[Cultivation, Farming, Multiple partners/Throuple, BL, R-18, Child, HE]

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