Demon King: Hero, don't run away! - Chapter 13 - Goblin Forest

What happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.

Upon traversing through time, Divine Doctor Qi Yu became a foolish Princess, the kind doomed to be entombed alongside her husband. Fortunately, her medical skills were exceptional. With a unique secret technique, she fished a certain Prince out of his coffin and performed a spectacle of raising the “dead.”Everyone said that after dying once, the Qi Family's useless Second Miss seemed to have transformed into someone else. Not only did she punch pure lotuses and kick duplicitous teas, but she also possessed the Resurrection Technique and mastered all sorts of martial arts, turning the entire capital city upside down.All the civil and military officials of the court begged the Prince to divorce his wife, yet the Prince, with an expressionless face, retorted, “The one spoiled by this Prince, if you can't stand it, just suck it up.”

“She is the one who forced me to marry her, she is also the one who pushed away ShuangAi from me, she threatened my family with her family power and all these years, she did everything to subdue me...that evil woman MuTan“

In a world where beast masters rule by taming magical creatures and competing in thrilling tournaments, becoming the most celebrated sport, Eratz seemed destined for greatness. Surrounded by friends and family, his path was set until a shocking betrayal shattered his dreams.Fueled by the pain of his betrayal, Eratz looks up at the night sky, finding a new purpose. He vows to rise from the ashes and conquer the beast master world, determined to become the greatest and reclaim his lost honor.