The Great Core's Paradox - Chapter 270: Prove It To Me

After dying as a college student, Kain wakes up in a magical world where people form bonds with spiritual creatures to fight alongside them. Determined to rise to the top, he relies on a System and loyal companions.Everything seems to align with his ambitions—except the spiritual creatures he can contract seem to be remarkably…strange

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.

Shu Yu has passed through the book, and has become a poor cannon fodder who was implicated by the dead female supporting role and only appeared twice and was finally exiled for thousands of miles.

After finding that he could not change the result, Shu Yu decided to eat, drink, lie down and wait.

Who knew that the exile had not yet come, but she was suddenly told that she was not the daughter of the Shu family.

Her biological parents were peasant households who lived so hard to make ends meet that their house was leaking.

And the Shu family decided to obliterate her in order to hide her blemish.

Shu Yu: Come on, I can’t kill you.

Returning to his biological parents, Shu Yu finally sighed as he looked at the plate of pickles and a bowl of porridge on the table and placed in front of him, as well as his parents’ nervous and bewildered expressions.

You can’t lie flat, or you’ll starve to death.

- Description from novelbuddy