Eternally Regressing Knight - Chapter 773

This world has fused with another world and such fusion leads to the rise of Martial Artists.Chen Shouyi becomes the master of the ‘Book of Knowledge’. He can deduce cultivation arts, and optimize secret manuals with the help of it.But the first time he enters the space created by this Book, there's an accident.“Brother! Brother! What happened to you?”“Wake up, I promise I'll never intentionally annoy you again.”“Please wake up!”“Brother! Brother... Dad! Mom! Come quickly, my brother has fainted.”

In the tenth year after the new era, the world finally came to an end. Zhang Mu truefully waited for his death, but unexpectedly found that he had returned to ten years ago. With his memory about the future, he swore that he would change the calamitous history, saving the earth from being destroyed! Walking dead, zergs, evolvers, and various mutated animals… nothing can stop him! The first step is to retrieve his identity as an era merchant , then find all the treasures he can remember to enhance himself!

- Description from Novelupdates

Orphaned at the mere age of seven and thrown out on the streets with no place to go. Kana lived the life of a street rat. She did what she could to survive from digging through the trash and stealing what she could. But even after almost ten years of surviving, her life still ended short.

The most successful businessman of his time, who started from being a homeless orphan, died indignantly because of being plotted against by his most trusted aid, his own brother.