Forgotten Juliet - Chapter 181:

Luo Yi, a high school dropout in his original world, was isekai’d into the world of the Witcher 3. Starting out as a weak boy named Roy in the village of Kaer, Lower Posada, he was determined to grow stronger, no matter what it took. The first step toward becoming a legend was to kill. And his first kill was… a rooster. ‘You gain 1 EXP.’ Of course, Roy had his own cheat system like all the other isekai protagonists. His first step to becoming a legend started now…

Guns suppress all divine demons and evil spirits, flesh and blood forge the multi-dimensional Great Wall!In the second year of Ming Country, Tianmen City was in need of recovery after the war. Chaos thrived, and evil spirits roamed freely.The children of the poor take charge early, and garrison soldiers need to learn to earn their own money.My name is Wang Yunxiao, an external field agent for the Special Service Bureau, specialized in dealing with various demon and evil spirit emergencies locally.Let me introduce my wife Li Mumu—she is gentle, virtuous, cute, and empathetic, and she is an evil spirit.Who writes a diary in all seriousness! Can what’s written even be considered true inner thoughts? Despicable!(The female protagonist’s solo storyline begins later, starting from chapter 87)

High school student Mikoshiba Ryouma was summoned to a different world in the middle of a war. Sensing the malice from the one who summoned him (a summoner of the O’ltormea empire), he uses his martial arts to run away, killing important people of the empire during his escape. After the escape, he rescues two twin sisters from the hands of thieves. The sisters who can use magic, swear to serve him as subordinates. Thus, Ryouma begins his journey on the path of the supreme ruler.

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