The Breeding Deal: Brother-in-law's Forbidden Offer - Chapter 1: The Man Who Loved Her

Time Sin is distinct, Numerical Sin is crafty, and Fate Sin is undefinable; when Sinners become calamities, all living things suffer!......Wondering about the population dividend in the Cultivation World?This book will tell you the answer!......Wang Zijia has transmigrated, obtaining the Golden Finger at the same time, which allows him to exchange his own body at will.But when he discovers what he can exchange with it, he is utterly speechless.Weights: Collection of Miscellaneous Literary WorksValue: 6Description: A treasure trove of knowledge for an adolescent, cultivated intensively for over a decade; it's a precious gem from a Foreign World with immense value!Wang Zijia: “... ...”Looking at one of the biggest Weights, Wang Zijia is momentarily speechless. Reading novels is actually one of his most substantial life experiences!......As he uses the Golden Finger to rewrite his futile life, he unwittingly forces his Spiritual Roots to produce an offspring, making the world start to seem different.All kinds of audacious schemes began to surface. Exploiting junior brothers, deceiving baby demonic beings, convincing the worthless ones that they are geniuses. Constructing his own channels and factions, inching his way towards survival on the road of immortality!

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

From a caste based high school, bottom-tier Naomi Masatsugu is caught up in a summon of his class to a different world. However, as soon as they arrived the king said, “This guy is unnecessary because he only has clumsy skills ” and it is concluded that he is to be forced to administer the orphanage, which no one wants to do. Unfortunately for the orphanage his skills were cheat skills that cause the girls to cling to him.

In order to “defend” the girls that depend on him, he must operate the orphanage while overcoming the powerful people, authorities, and former classmates that surround him.

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy