The Heroine is My Stepsister, and I'm her Final Boss - Chapter 27: The Throne of Thorns

After rebirth, she, who used to be a top international spy, becomes the eldest daughter of the Fengs, a fat girl who is ugly and foolish in the eyes of the ordinary people.
Mastering Royal 18 Saber Moves and Purgatory 9 Palms, she rose to fame with the martial arts of Demon Cook.
Upon an imperial edict, she was ennobled as the wife of Lord Cen, and then suffered various intrigues and plots…
She proved herself to be a real overmatch and a true genius to the world…

“Why is it that everyone has hated you since you were little?”“Why do you always manage to explode with power when you’re in dire straits?”“Why, despite having no weak chakra control, can’t you even walk on water?”Kurama (Nine-Tails) looked up and laughed heartily: “There’s only one answer—”“You are! The one who nearly destroyed Konoha and killed the Fourth Hokage twelve years ago! The Jinchuriki of the strongest tailed beast, the Nine-Tails Kurama! Hahahahahaha!”

The MC entered the body of the An family eldest son, An Ziran, an arrogant 16 years old boy who weighed 78 kg (~171-172 lbs), who only knew how to eat, play and sleep. Seeing his current body, An Ziran decided his first priority was to LOSE WEIGHT!

Three days later after he became An Ziran, An Ziran’s father and his biological mother died, which meant as the eldest son he had to take over the family business.

Beside his legitimate first wife, An Ziran’s father also married 3 others women, who all wanted to take over the An family fortune but only the eldest son could be able to touch it, therefore they have to depend on An Ziran in order to live a comfortable live.

An Ziran’s father also had an older brother who is always planning to steal the An family fortune. The elder brother of An Ziran’s father and the woman he married had powerful connections. In order to save the An family fortune, An Ziran has to find a golden thigh to cling on. The butler told An Ziran that there is an engagement between the An family and an influential family. Therefore he takes his sister to that family house to make a connection.

However, during their journey, An Ziran’s younger sister overheard that the son of that family is UGLY, so as a beautiful and spoiled young lady coming from a rich household, she didn’t want to marry him and decided to run away. Without any other choice, An Ziran had to take his sister’s​ place and marry that man, who told him that he would let him go soon, but lied.

- Description from Novelupdates

Han Muye, who was full of comprehension, was reborn in the world of cultivation, entered the sect of kendo, and became a sword watcher guarding the sword pavilion.

There are 100,000 swords hidden in the sword pavilion, and the sword watcher needs to wipe the long sword once a month.

Wipe the long sword “Qinghe” to get a wisp of sword energy.

Wipe the long sword “Purple Flame”, comprehend the original sword master’s swordsmanship, Liaoyuan, and acquire the fiery sword intent.

Wipe the spirit sword “mountain”, comprehend the experience of real kendo of the giant stone, and obtain the sword power of the mountains.

…

Han Muye has been watching swords for sixty years, and Han Muye has cultivated sword energy for sixty years.

In sixty years,

There were disciples who came to ask for swords and got Han Muye’s advice.

The saintess of the Demon Sect who came to steal swords was rewarded by Han Muye.

There was a swordsman who came to challenge and returned with a broken sword.

…

Sixty years later, the fairy world invaded.

The disciple who asked for the sword at that time has become a peerless sword fairy, holding the sword to the sky to guard one side.

The saintess of the Demon Sect who stole the sword back then was already the master of the Demon Sect. She only sent a letter to the sword pavilion and led the Demon Sect to fight in the sky.

The swordsman who challenged back then entered the Dao with one step, and his sword qi shot up three thousand feet into the sky.

…

Above the sky, the fairy masters suppressed it.

In the sword pavilion, Han Muye slowly got up, followed by thousands of long swords behind him.

“Today, I, Han Muye, hold a sword across the sky, looking at the gods in the sky, who can enter this mortal world?”

- Description from novelbuddy