A Hentai System in the World of Danmachi - Chapter 59 - 58 - I bought a mansion.

Witnessing her boyfriend cheating on her with her bestie, Shiyao was so angry that she went to a pub for fun and met a man, who was really a piece of work. After a crazy night she fled away, but was embarrassed to know that the man she slept with was her boss You Ze.
Jesus, give her a break!

- Description from Novelupdates

After crossing over to another world which seemed to be a fusion between many anime worlds, The Fantasy System was unlocked for Mu Fan. After finishing the tasks given by the system, Fantasy points are given which allows him to gain access to the Fantasy store that was full of daily talents and more.

Yuuki Asuna: You know how to cook a lot of dishes. Can you teach me?

Sagiri: I don’t know anyone called Eromanga-Sensei.

Many more characters and interesting plots await us.

- Description from Novelupdates

The year was 2334, when virtual reality reached its peak with the creation of the SHS prototype, an advanced neural simulation that allows players to fully immerse themselves in alternate worlds.Henry Bartholomew was hand picked as a recruit to try out this new project. He had carefully chosen to enter the world where he was the son of a king, a chilling and lazy life.What happens when he wakes up as the son of a Baron instead? And even worse, his newly claimed character has a bad reputation around the people.With all odds against him, the young man decided he was by all means going to create a world where he could live as carefree as he wanted.But first he needed to do one thing - make his land the most successful in all the seven continents and save his family nameAnd luckily, he had support -[Your Ep has been filled.][Earning points can now be claimed.]The young lord tapped the screen.[Cards available for purchase.][Territory upgrade.][Description: this card allows you to upgrade your territory, allowing the land to level up multiple folds with more qualities and growth.][Cost: 7000 CpRank: Bronze. (0/10) {10 Cp to upgrade} ]'Upgrade all.' the young man replied.

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.