The Hive: We Are One - Chapter 1: Simulation?

Luca, killed by the Demon God, woke up to find himself back on the day the “Eternal Game” launched.At this time, the game has just started, and Earth hasn't turned into a monster's paradise; everything is back to the beginning.Determined not to let the tragedies of his previous life repeat, Luca, armed with ten years of gaming experience, re-enters the world of Eternal, only to awaken the unique SSS-level talent!Starting with maxed charm!As he enters the game, pondering how to enhance his strength.A cold voice suddenly calls out: “Adventurer, wait a moment...”

The first time they met they had battled fiercely, just for a mere bunch of herbs. She needed it to save people, and he wanted to use it to save his own life.

Usami is a beautiful classmate with good morals and top grades. At school, she views Sakuto as her rival. But when he bumps into her after school, he sees a different side of her. She was playing at an arcade after classes, and she had this innocent smile that one couldn’t imagine on her at school.For the sake of getting along with her, he gets close to her at school and then plays together with her after school. They each have their places where they can deepen their bonds, and at last…This is the start of a heart-warming love triangle romcom!

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