One Piece: Capitalist Brook's Crew Expansion Plan - Chapter 379: The Breeding Prison

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.

Everyone said that Yi Qing was the number one Sword Cultivator in the world, with a swordsmanship and cultivation that no one could surpass. Whether it was when he was cultivating in the Lower Realm, or when he was in the Ten Heavens of the Upper Realm, he has always been undefeated.

Cheng Feng, an ordinary young man. He isn’t genius, however, his elder sister has a unique body, Nine Linglong Body.

One day, his brother in law awakes an eight order martial spirit and become a peerless genius in Hidden Dragon Academy. In another side, he can reach that step because of receiving the help of Cheng Feng’s elder sister.

When Cheng Clan’s people think that their clan will rise and advance to a higher status, but this is the beginning calamity of Cheng Clan. Their talented son in law writes off the marriage,

Cheng Clan Patriarch dies…

….

His elder sister commits suicide…

After Cheng Feng sees the calamity of Cheng Clan, his heart is wrath, he only wants to revenge to the people who cause his clan fall to this step.

” I will take revenge to the people who make…”

But he doesn’t have the strength to do it until he hears a mysterious voice…

- Description from Novelupdates

This stands at the forefront of strategy guides to Life (a shitty video game)!