Reborn at Boot Camp: General, Don’t Mess Around! - Chapter 4111 - : Weak Legs

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates

I, Hyoudou Issei, am a 2nd Year High school student and my age is equal to the number of years I haven’t had a girlfriend. And, someone like me got a girlfriend! I’m sorry buddies, I will walk the path of becoming an adult before you guys! – That’s how it was supposed to be, but why did I get killed by my girlfriend!? I still haven’t done anything yet! Are there no Gods in this World!? And, the person who saved me is the most beautiful girl in my school, Rias Gremory-senpai. I learned the shocking truth from her who isn’t a God but a Devil. “You have reincarnated as a Devil! Work for me!” Lured by Senpai’s breasts and treats, my life as a reincarnated Devil began. So the “Academy×Love Comedy×Battle Fantasy” starts here with just aggressive and worldly desires!

In the God Domain, Cultivators were far and few between, but each of them wielded power that would make them known as gods.

How did they come to have such power? They comprehended the laws between heaven and earth and became those very laws.

But something occurred, a youth that hadn’t gained the acknowledgment of the heavens to become a cultivator chance upon Qi. Determined to reverse the bad hand faith had dealt him he started researching it and came to a shocking conclusion. The very laws that the heavens prevented him from comprehending were swirling around in this strange energy!

The youth thought to himself that if he could somehow control it, then he could defy the heavens and become a cultivator. Without any hesitation he began researching more and found out that the only way to control this newfound energy was to absorb it within his body.

After many years of preparations, he did exactly that.

However, he promptly died from the finger size strand he absorbed.

Ten years after his death a cultivator found his research journal and decided to further study this fascinating idea.

Skip forward to an unknown period in the future and a baby was born into a powerful royal family as the second prince. Upon his birth this child had the laws of heaven and earth swirling around him. This immediately sent the royal court into a stir as they thought the heavens themselves had blessed the Emperor’s second son.

But as that was happening, the baby that had just been born saw the midwife use a spell to turn Qi into water to clean him.

Upon seeing this, the baby’s eyes widen into saucers as a voice screamed hysterically in his head, “W-WHO THE FUCK STOLE MY IDEA?!”