Exorcist's Self-Cultivation - Chapter 28 - 0, Andrew Dowqui

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

Roland died and transmigrated into the body of the third son of a Baron. Having reincarnated, at first he looked forward to the grace of the system or any other golden finger; alas, it seemed not everyone was lucky.In the end, he accepted that those were fantasies, whereas this was reality.Being the third son, he couldn't inherit land according to laws; however, he had a bit of warrior aptitude suitable to become a knight.Knowing that this might cause trouble in succession later, his father enrolled him in the army.Several years later, he became a 3rd-rank knight in the Beginner Stage and was going to be promoted but was injured when he tried to save the commander of his battalion.Amidst that, he received shocking news about his family's demise due to a monster tide, leaving him alone to inherit the barony.Weighing the pros and cons, he decided to escape from the risky venture and settle in a poor backwater barony village to lead a peaceful life; however...Just when he thought it was over, he awakened the Children's Blessing System.[Host's child detected, Family System activated.][Begin testing the child's aptitude.]“What, for real?”

What's the book about? It is about Demonic Cultivation!, If you cannot handle it, Please don't read it.Synopsis:When Song Wen killed the frail beggar who fought him over food and consumed his blood and soul, every cell in his body leaped with excitement. His spirit was exhilarated, and he realized then that his life would henceforth be filled with slaughter. For survival, for longevity, he would spare no effort, even if it meant creating mountains of corpses and seas of blood.