Legend of Swordsman - Chapter 6020 - : Future Self

In Academy City, magic and science coexist in an unwavering power struggle. Toma Kamijo, an academically-challenged student in Academy City, wields the power of the Imagine Breaker in his right hand, which allows him to completely negate all supernatural powers – as well as his own luck. When he happens upon a mysterious nun named Index, whose mind has been implanted with the Index Librorum Prohibitorum – 103,000 ancient texts banned by the Church – Toma’s luck is about to be pushed to its limits when he finds himself in the middle of a war he never expected!

She was born into a powerful family of the nobility, a blue-blooded aristocrat as capable as any man. He rose from humble origins up the military ranks, an iron-blooded knight with high ambitions. A transaction for power severed her from her childhood sweetheart. A tardy encounter was the beginning of his and her vow to meet life and death under heaven, standing shoulder to shoulder.

Political intrigue, dynastic succession struggles. He trampled through it all in the toil of becoming emperor.

Old enmities became new disputes, concerning life and death of entire families. She entered once more into the palace, changing the entire political climate of their world.

Meeting once again, they had become strangers. The peach blossom were all fallen, no more than a golden age grown cold.

- Description from Novelupdates

Lyle Walt is a young noble boy and heir looking forward to the day he can inherit his family’s territory. Except around when he was 10 year old, his parents started neglecting him more and more in favour of his little sister, Celes.
On his fifteenth birthday, he is challenged to a duel by his sister to see who will inherit the household and horribly loses, being cast out of his family. Afterwards, he gets treated by the family groundskeepers and receives the family heirloom Gem from him that Lyle’s grandfather had entrusted to him. From there, he begins an aimless journey with his childhood friend and former fiancée, Novem, and the Gem-turned-Jewel that houses the memories, personalities, and Skills of seven of his ancestors.

All Chu Lian had done was to read a book where the female lead had cheated on her wonderful husband. While wondering why, before she knew it, she was waking up in the body of that very same female lead!

Wait, did that mean the handsome husband from the book was hers now? Chu Lian decided to welcome him with open arms!

However, what she got wasn’t the kind husband she had been expecting. Instead, his personality seemed to have been completely flipped! He left her all alone on their wedding night… and just five days into their marriage, her dear husband abandoned his loving wife and left to enlist in the army!

Fine! Be that way! She could pass her days perfectly well somehow, even if she had to do it alone!

Chu Lian put her household in order, charmed the rest of her new family, and did a little business on the side. She even opened up some new trade routes! Her days passed peacefully and leisurely… Until her dear husband got into trouble at the frontline of the war.

Hmph, isn’t he crawling back to me for help in the end? Forget it, I’ll go save him myself!