Sir, How About A Marriage? - Chapter 43 - : A Clear Clarification

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

The story of a human reincarnated as the Creator God of a new world, and her observation logs of the burgeoning new world and life.

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Dragons, which have existed since before the birth of human civilization, became the guardian dragons of the empire.

But whether you guys call me that or not, I’m going to sleep.

The maniac who was crazy about all kinds of fields such as military and steampunk had been reincarnated.

However, his father was King Sejong the Great?

The mania-wise king and his crazy maniac son.

Along with the ministers, and countless humans who were getting exploited.

Even today, the night of Joseon was filled with the light of overtime.

The inexplicable existence expands the earth and stars a hundred times, and the whole world is digitized by the game. The ancient existence began to return, and there were alien races in the chaos.

This is the struggle for hegemony between the fierce soldiers of the Great Qin Dynasty and the Yulin Army of the prosperous Tang Dynasty, and also the collision between the military soldiers of Wei Dynasty and the trapped camp.

When the Spartan Warriors met the Yellow Turban Warriors, when the Holy See’s Crusades met the Mongolian Iron Cavalry… Elephant Soldiers, Iron Buddhas, Viking Pirates… Humans, Beasts, Alien Invasions… …Who is the strongest civilization in the heavens?

- Description from novelbuddy