Apocalypse: I Have A Multiplier System - Chapter 22 - : Gate 19

In this period where countless supporting lead actors always attempt to counterattack, turn over a new leaf or simply refuse to take up the role, his purpose of existing is to fill the role of a good supporting male lead and uphold his duty to the best of his ability. To add the needed lustre to storylines and this world. Only, it’s a pity that someone who is not afraid of god-like enemies will be afraid of pig-like teammates.

# COZY # OMNIPOTENT # CHIEFASSISTANT

In her past life, Mo Ruyue was a top-notch assassin. She was as indifferent as an abyss, and had killed more people than she had fingers to count. In her new life, she became the vicious stepmother of five munchkins in a remote mountain valley, and they were terrified of her. In this life, she decided to change the way she lived. She only had four bare walls for a house? Her children starved to the point they were just skin and bones? No problem. She could kill wild boars with her bare hands, so food wasn’t an issue. She was also proficient in multiplication tables, and her kids instantly became big fans of hers. It had been a difficult journey to change from a vicious stepmother to a warm one. Then, her supposedly dead husband suddenly returned, now the first minister of the dynasty.“Let’s divorce. Give me the children, and I’ll return the money to you.” “I don’t lack anything, just you and the children.”

so, reincarnation huh?“a lot of good... a lot of bad... balanced karma.” “good news you get one boon to bring with you to the next life. unfortunately for you though, you don't get to choose. totally random. ready?”join Apollo in his new life where through sheer luck (good or bad?) is raised by an all hungry, all dominant and all loving hivemind who will burn the galaxy just to see him smile.

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