This Beast-Tamer is a Little Strange - Chapter 75 - : Crisis

Rules exist to be broken, and every loophole is a weapon. Trust no one, and annihilate those who deserve revenge.Granger Reiner never asked to be a champion, but fate chose him as the 101st contender for the goddess of Ascension—a deity mocked as the weakest among the pantheon, with 100 failed champions in just five months.Armed with a unique system and the ability to create barriers, Granger is thrust into Agrasia, a world teeming with treachery, to compete against other champions and conquer the Endless Dungeon.What he discovers is far worse than he could imagine: betrayal lurks at every corner, allies are fleeting, and the game is rigged.Learning the hard way that fairness has no place in a world built on lies, Granger transforms his weakness into his greatest strength. With vengeance as his driving force, he sets out to destroy the system, expose the truth, and turn the goddess’s mockery into triumph.In a world where everyone is an enemy, the 101st champion will stop at nothing—even if it means taking on the world itself.

This is a story about Gong Lixin who was the young master of an ancient underground palace in the ancient times. He was raised by his master and forced to partake sexual relationships with numerous people to cultivate his Yin Body. His master who has a Yang Body was going to absorb him after he has reach a level to become stronger. MC refused and killed his master also dying at the same time. Then he transmigrated to the modern time and thinking he will enjoy peaceful life, the end of the world arrived.

Being someone with no special powers except for his martial arts, see how he use his martial arts to dominate the times and find his lovers.

- Description from Novelupdates

Read at least six chapters, then prepare to crave the rest.The main character will show up in Chapter Five, though I don't recommend skipping the first four chapters.-----The world was celebrating. The Demon King was dead, along with his Darkness Generals.Humans led the other races to war for subjugation. They killed all, and none were spared. However, thousands of years before this happened, a piece of history was altered by time itself. In fact, the Demon King didn't have four generals but only one, which he sealed and sent into eternal slumber. Just as he started to close his eyes, the chains locked away for eternity shattered into pieces.

The aliens came with hostility.
Facing the invasion of aliens, human beings are weak like ants.
So this is the end, the real end.
But there is resistance when there is an invasion.
For some, this is not the end, it is war.
So this is war.
Real war!

- Description from Qidian