In Naruto with the Flame-Flame Fruit - Chapter 4: - : I’m Just an Experiment

An ordinary student accidentally traveled into an other universe and became the king of a small kingdom. He had gotten a “Cheating Code” of life and was able to complete something extraordinary. This is the story about a king that was able to conquer continents and leave behind him an ultimate legend that will be recited between every generation to come.

- Description from novelupdates

On doomsday, Tang Yu unexpectedly got the Lord of the End System, he remained very calm.

Lack of experts? I will construct a pub so I can make ten draws in a row;

Lack of food? I can’t be too cheap with the large pack full of food supplies sent from the market;

Lack of safety? Arrow Tower, Mage Tower Artillery and all kinds of automatic defence buildings. Having many isn’t too many;

Lack of equipment? Workshop production must produce high-quality items. Sir, would you like one? We are having a 20% discount special at nine!

…………

In short, this is a story of Great Lord Tang building up his territory, attacking some monsters, and ripping off…… Cough, making some money at the same time.

Yun Muxi was a young scriptwriter in the 21st century who once time-traveled back into the olden days of China.

There, she met and fell in love with the Emperor, Duanmu Gongyu. After a torturous heartbreak, the duo separated and never saw each other again.

When Yun Muxi returned to the modern world, she ended up working with a rising actor, Gong Yu, who happened to be the same man she once loved with her whole heart. As soon as he set his eyes on her, the feelings of yesterday came back and he was determined to make her his again.

As Gong Yu tried to woo Yun Muxi repeatedly, she realized that she found it hard to resist his charms. However, the duo was trapped in a series of events that made falling in love impossible.

The modern-day Yun Muxi now has a daughter while the father of the child remained unknown. Gong Yu, on the other hand, had developed a history of heart attack.

On top of that, their story unraveled with shocking truths at every turn. The star-crossed lovers were faced with steep challenges that constituted the endless list and many sacrifices had to be made.

Would they eventually be given the chance to love freely?

- Description from Novelupdates

The male student, Fukai Nagamasa, ignores his studies for college entrance exams in favor of following the path to chuunibyou. As he fainted during night cramming session before the exams, he realized that he was transported to a parallel world as a feudal lord in the Sengoku Era. Not to mention that suddenly, he was marrying the sixth Demon King, Oda Nobunaga’s little sister, the one who was purported to be an unrivaled beauty?